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Journal of Integrative Agriculture 2013年第10期12卷 1712-1721页

作者： HAN Juan jia zhi-kuan HAN Qing-fang ZHANG Jie Chinese Institute of Water-Saving Agriculture Northwest A&F University/Key Laboratory of Crop Physi-Ecology and Tillage Science in Northwestern Loess PlateauMinistry of Agriculture

The ridge and furrow rainfall harvesting（RFRH） system is used for dryland crop production in northwest of *** determine the effects of RFRH using different mulching materials on corn growth and water use efficiency（WUE）,a field experiment was conducted during 2008-2010 at the Heyang Dryland Experimental Station,*** treatments were used in the *** received uncovered mulching in all RFRH treatments whereas ridges were mulched with plastic film（PF）,biodegradable film（BF） or liquid film（LF）.A conventional flat field without mulching was used as the control（CK）.The results indicated that the average soil water storage at depths of 0-200 cm were 8.2 and 7.3%,respectively higher with PF and BF than with ***,LF improved soil water storage during the early growth stage of the *** with CK,the corn yields with PF and BF were increased by 20.4 and 19.4%,respectively,and WUE with each treatment increased by 23.3 and 21.7%,*** were no significant differences in corn yield or WUE with the PF and BF *** net income was the highest with PF,followed by BF,and the 3-yr average net incomes with these treatments were increased by 2 559 and 2 430 CNY ha-1,respectively,compared with *** and PF had similar effects in enhancing the soil water content,crop yield and net ***,it can be concluded that biodegradable film may be a sustainable ecological alternative to plastic film for use in the RFRH system in northwest of China.

关键词： corn growth mulching materials ridge and furrow rainfall harvesting soil water spring corn

Effect of Rotational Tillage on Soil Aggregates, Organic Carbon and Nitrogen in the Loess Plateau Area of China

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Pedosphere 2013年第4期23卷 542-548页

作者： HOU Xian-Qing LI Rong jia zhi-kuan HAN Qing-Fang Chinese Institute of Water-Saving Agriculture Northwest A&F University Key Laboratory of Crop Physi-Ecology and Tillage Science in Northwestern Loess Plateau Ministry of Agriculture Northwest A&F University School of Agriculture Ningxia University

In rain-fed semi-arid agroecosystems, continuous conventional tillage can cause serious problems in soil quality and crop production, whereas rotational tillage （no-tillage and subsoiling） could decrease soil bulk density, and increase soil aggregates and organic carbon in the 0-40 cm soil layer. A 3-year field study was conducted to determine the effect of tillage practices on soil organic carbon （SOC）, total nitrogen （TN）, water-stable aggregate size distribution and aggregate C and N sequestration from 0 to 40 cm soil in semi-arid areas of southern Ningxia. Three tillage treatments were tested： no-tillage in year 1, subsoiling in year 2, and no-tillage in year 3 （NT-ST-NT）; subsoiling in year 1, no-tillage in year 2, and subsoiling in year 3 （ST-NT-ST）; and conventional tillage over years 1-3 （CT）. Mean values of soil bulk density in 0-40 cm under NT-ST-NT and ST-NT-ST were significantly decreased by 3.3% and 6.5%, respectively, compared with CT, while soil total porosity was greatly improved. Rotational tillage increased SOC, TN, and water-stable aggregates in the 0-40 cm soil, with the greatest effect under ST-NT-ST. In 0-20 and 2（}-40 cm soils, the tillage effect was confined to the 2-0.25 mm size fraction of soil aggregates, and rotational tillage treatments obtained significantly higher SOC and TN contents than conventional tillage. No significant differences were detected in SOC and TN contents in the 〉 2 mm and 〈 0.25 mm aggregates among all treatments. In conclusion, rotational tillage practices could significantly increase SOC and TN levels, due to a fundamental change in soil structure, and maintain agroecosystem sustainability in the Loess Plateau area of China.

关键词： semi-arid region SOC sorage soil bulk density tillage practice water-stable aggregates

Improvement in winter wheat productivity through regulating PSⅡ photochemistry,photosynthesis and chlorophyll fluorescence under deficit irrigation conditions

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Journal of Integrative Agriculture 2022年第3期21卷 654-665页

作者： Shahzad ALI XU Yue-yue MA Xiang-cheng jia Qian-min jia zhi-kuan College of Pastoral Agriculture Science and Technology Lanzhou UniversityLanzhou 730000P.R.China Institute of Water Saving Agriculture in Arid Areas Yangling 712100P.R.China

Deficit irrigation is critical to global food production,particularly in arid and semi-arid regions with low *** water shortage has threatened agricultural sustainability under the dry-land farming system in China,there is an urgent need to develop effective water-saving *** carried out a field study under two cultivation techniques:(1) the ridge and furrow cultivation model(R);and(2) the conventional flat farming model(F),and three simulated precipitation levels(1,275 mm;2,200 mm;3,125 mm) with two deficit irrigation levels(150 and 75 mm).We demonstrated that under the ridge furrow(R) model,rainfall harvesting planting under 150 mm deficit irrigation combined with 200 mm simulated precipitation can considerably increase net photosynthesis rate(P_(n)),quantum yield of PSII(ΦPSⅡ),electron transport rate(ETR),performance index of photosynthetic PSII(F_(v)/F_(m)′),and transformation energy potential of PSII(F_(v)/F_(o)).In addition,during the jointing,anthesis and grain-filling stages,the grain and biomass yield in the R model are 18.9 and 11.1% higher than those in the flat cultivation model,respectively,primarily due to improved soil water *** winter wheat fluorescence parameters were significantly positively associated with the photosynthesis,biomass and wheat *** result suggests that the R cultivation model with irrigation of 150 mm and simulated precipitation of 200 mm is an effective planting method for enhancing P_(n),biomass,wheat production,and chlorophyll fluorescence parameters in dry-land farming areas.

关键词： chlorophyll fluorescence deficit irrigation photosynthesis production planting models soil moisture content

Effects of Water-Collecting and -Retaining Techniques on Photosynthetic Rates, Yield, and Water Use Efficiency of Millet Grown in a Semiarid Region

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Journal of Integrative Agriculture 2012年第7期11卷 1119-1128页

作者： WEN Xiao-xia ZHANG De-qi LIAO Yun-cheng jia zhi-kuan JI Shu-qin College of Agronomy Northwest A&F University Yangling 712100 P.R.China Wheat Research Centre Henan Academy of Agricultural Sciences Zhengzhou 450002 P.R. China

Field experiments were conducted in 2003 and 2004 to study the effects of plastic ridges and furrow film mulching （plastic film on sowing, as well as plastic film on flat soil and hole sowing） and chemicals （a drought resistant agent and a water- retaining agent） on growth, photosynthetic rate, yield, and water use efficiency （WUE） of spring millet （Setaria italica L.）. The experimental results showed that water-collecting and -retaining techniques can effectively increase soil moisture content, the leaf photosynthetic rate and crop growth. Due to increased soil moisture under the plastic-covered ridge and furrow water-collecting in July and August, dry matter and plant height had a increase at the booting stage （late growth advantage）. However, the plastic-covered flat soil and hole sowing reduced soil evaporation during early growth, the increase of dry matter and plant height appeared at the seedling stage （early growth advantage）. Plastic-covered ridge and furrow sowing supplemented with chemical reagents had significant positive effects on water collection and soil moisture retention. Improvement of soil moisture resulted into the increase of the photosynthetic rate, dry matter accumulation yield and WUE. The water-collecting and -retaining techniques can improve WUE and enhance crop yield. Correlation analysis demonstrated that the photosynthetic rate under the water-collecting and -retaining techniques was significantly associated with the soil moisture, but had no significant relationship with leaf chlorophyll content. Plastic- covered ridge and furrow sowing supplemented with chemical reagents increased the yield and WUE by 114% and 8.16 kg ha-1 mm-1, respectively, compared with the control; while without the chemical reagents the yield and WUE were 95% and 7.42 kg ha-1 mm-1 higher, respectively, than those of the control.

关键词： water use efficiency Loess Plateau of China plastic film mulch drought-resistant agent water-retaining agent

Characteristics of Endogenous Hormone Variations in the Roots of Alfalfa (Medicago sativa L.) Cultivars of Different Fall Dormancies During Spring Regrowth Stage

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Agricultural Sciences in China 2011年第7期10卷 1032-1040页

作者： HAN Qing-fang MENG Hai-tao jia zhi-kuan XU Ling-fei WU Feng-ping DING Rui-xia Chinese Research Institute of Water-Saving Agriculture in Arid Areas Northwest A＆F University/Key Laboratory of Crop Production and Ecology Minister of Agriculture Yangling 712100 P.R.China Colloge of Horticulture Northwest A＆F University Yangling 712100 P.R.China Center of Enviroment Detection in Tianjin Tianjin 300191 P.R.China

Regrowth traits of alfalfa （Medicago sativa L.） in spring are closely related to its fall dormancy before winter. In order to determine the relationship between fall dormancy （FD） grade and hormone variation pattern and provide academic references for the variety improvement and production of alfalfa, the variations of gibberellins （GA3）, indole-3-acetic acid （IAA）, and abscisic acid （ABA） in alfalfa roots during regrowth period in spring were examined by high performance liquid chromatography （HPLC）. The study involved seven alfalfa cultivars that belonged to four fall dormant grades, i.e., 2, 4, 6, and 8. The results showed that the differences in spring regrowth among the alfalfa cultivars were partially associated with their root hormone levels. The alfalfa cultivars that belonged to the same dormancy grades presented similar variation trends in endogenous hormone content in their roots during the spring regrowth stage. At the early regrowth stage, cultivars with a higher dormant grade had a higher GA3 concent and a lower ABA content in their roots than the cultivars with a lower dormant grade; and IAA content in roots of non- and semi-fall dormancy cultivars was higher than that of fall dormancy cultivars. During the whole period of spring regrowth, the root ABA content of fall dormancy alfalfa cultivar is significantly higher than those of semi- and non-fall dormancy cultivars. GA3 contents in the roots of all cultivars under study showed a double-peak dynamic curve; root IAA contents of the studied cultivars presented a downward trend. But the trend did not significantly differed among the different fall dormant cultivars. The higher GA3 content and lower ABA content in root of non-fall dormancy alfalfa lead to its earlier regrowth. Regrowth time and rate of alfalfa can be regulated by exogenous GA3 or ABA at the early regrowth stage to meet producing requirement.

关键词： alfalfa root endogenous hormone fall dormancy grade regrowth

Effects of Plastic Film Mulching of Millet on Soil Moisture and Temperature in Semi-Arid Areas in South Ningxia of China

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Agricultural Sciences in China 2005年第11期4卷 865-871页

作者： LIAO Yun-cheng ZHANG De-qi jia zhi-kuan ZHANG Li LU Yang-ming College of Agronomy Northwest A＆F University Yangling 712100 P.R. China

The effects of film mulching of millet on soil water content were studied in semi-arid areas in the Loess Plateau of South Ningxia, China. Different mulching methods including water micro-collecting farming （WF）, water micro-collecting farming in winter fallow （WW）, hole seeding on film （HF）, hole seeding on film in winter fallow （HW） were compared to determine the effects of mulching methods on soil water collecting and conservation during millet growth periods of 2003-2004, as well as the variation tendency of water content after rainfall, output of millet and water use efficiency （WUE）. The experimental results in the two successive years indicated that water micro-collecting farming had a better function of collecting water after rainfall, and side infiltrated water was stored under the ridges and the top layer 0-40 cm soil water changes were great. WF had obvious role in water collection and preservation of soil moisture. It effectively improved the water supply capacity by about 19.05% in the end of growth seasons. The storage of HW and WW increased by 24.9 and 7.1 mm compared with CK, and output of yield were obviously increased. Film mulching increased the yield of millet and enhanced water use efficiency （WUE）. During different growth periods, WF exhibited better water storage function with lower water consumption, and demonstrated optimal social and ecological benefits.

关键词： Millet Dynamic change of soil moisture Film mulching Water micro-collecting farming

Retraction notice to“Improvement in winter wheat productivity through regulating PSⅡ photochemistry,photosynthesis and chlorophyll fluorescence under deficit irrigation conditions”

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Journal of Integrative Agriculture 2022年第7期21卷 I0001-I0001页

This article has been retracted:please see Elsevier Policy on Article Withdrawal(http://***/locate/withdrawalpolicy).This article has been retracted at the request of the Editor and *** article was submitted by the first author Shahzad ALI without permission from corresponding author,*** *** editor and corresponding author requested to retract the *** are offered to the readers of the journal.

关键词： winter please journal

生土地种植苜蓿后土壤速效养分与pH值的时空变化

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西北农林科技大学学报（自然科学版） 2008年第11期36卷 111-116页

作者：闻志彬贾志宽韩清芳西北农林科技大学干旱半干旱农业研究中心陕西杨凌712100

【目的】为评价苜蓿对改良土壤、培肥地力及草田轮作的影响提供依据。【方法】在苜蓿各生育期对0~60 cm土层进行取样，研究土壤速效养分含量和pH值的动态变化。【结果】种植苜蓿第2年各土层土壤硝态氮含量增幅较小，第3年各土层土壤硝... 详细信息

【目的】为评价苜蓿对改良土壤、培肥地力及草田轮作的影响提供依据。【方法】在苜蓿各生育期对0~60 cm土层进行取样，研究土壤速效养分含量和pH值的动态变化。【结果】种植苜蓿第2年各土层土壤硝态氮含量增幅较小，第3年各土层土壤硝态氮含量增幅较大，与种植前相比，其0-20、20-404、0-60 cm土层硝态氮含量分别增加了3.85，5.82和8.25 mg/kg;在第2年，各土层土壤速效磷含量变化呈抛物线型，于第2茬达到峰值。在第3年，头茬苜蓿生育期内各土层土壤速效磷含量均迅速下降，与种植前相比，0-20、20-40、40-60 cm土层土壤速效磷含量分别降低了3.16，2.98和2.40 mg/kg;各土层土壤速效钾含量逐年下降，与种植前相比，种植苜蓿后的第3年，0-20、20-40、40-60 cm土层土壤速效钾含量分别下降了94.35，88.29和88.55 mg/kg;各土层土壤的pH值略有增加，与种植前相比，种植苜蓿后的第3年，0-20、20-40、40-60 cm土层土壤的pH值分别增加了0.14，0.12，0.04。【结论】种植苜蓿后，土壤硝态氮含量呈先降低后升高的变化趋势，在第2年第1茬初花期时达到最低，苜蓿的固氮作用从第2年第2茬开始显现;土壤的速效磷含量变化呈抛物线型变化，于第2年第2茬达到峰值;土壤速效钾含量逐年下降;pH值略有增加但变化不明显。

关键词：生土地苜蓿速效养分 pH值时空变异

不同覆盖材料对耕层土壤温度及玉米出苗的影响

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干旱地区农业研究 2009年第3期27卷 13-16,26页

作者：李荣张睿贾志宽西北农林科技大学干旱半干旱研究中心农业部旱地作物生产与生态重点开放实验室陕西杨凌712100

在玉米沟垄集雨种植模式下对沟内覆盖普通地膜、生物降解膜、液体地膜及秸秆的耕层土壤温度及玉米出苗状况进行了观测。两年结果表明,普通地膜和生物降解膜覆盖均能显著提高土壤温度,在5-25 cm耕层平均温度比不覆盖分别增加2.51℃-3.77... 详细信息

在玉米沟垄集雨种植模式下对沟内覆盖普通地膜、生物降解膜、液体地膜及秸秆的耕层土壤温度及玉米出苗状况进行了观测。两年结果表明,普通地膜和生物降解膜覆盖均能显著提高土壤温度,在5-25 cm耕层平均温度比不覆盖分别增加2.51℃-3.77℃和1.30℃-2.19℃,液体地膜覆盖与对照差异很小,增温值为0.13℃-0.56℃,而秸秆覆盖与不覆盖相比有明显的降温作用,其5-25 cm土层温度比对照降低1.25℃-2.19℃。普通地膜和生物降解膜覆盖分别使玉米提前4 d和3 d出苗,秸秆覆盖使出苗期推迟2 d,液体地膜覆盖与对照的出苗期无差异。

关键词：玉米沟垄种植覆盖材料土壤温度出苗

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苜蓿蓟马的发生规律和药剂防治试验

干旱地区农业研究 2005年第4期23卷 212-214,218页

作者：陶志杰花蕾贾志宽西北农林科技大学植物保护学院西北农林科技大学农学院陕西杨凌712100

在陕西关中地区研究了苜蓿蓟马优势种群、种群数量、危害特征、田间消长规律等。结果显示:牛角花齿蓟马(Odontothripsloti)是优势种;蓟马主要危害第二、三茬苜蓿,7～8月份是苜蓿蓟马若虫的发生危害高峰期。选用高效氯氰菊酯、吡虫啉、... 详细信息

在陕西关中地区研究了苜蓿蓟马优势种群、种群数量、危害特征、田间消长规律等。结果显示:牛角花齿蓟马(Odontothripsloti)是优势种;蓟马主要危害第二、三茬苜蓿,7～8月份是苜蓿蓟马若虫的发生危害高峰期。选用高效氯氰菊酯、吡虫啉、艾美乐和围打蓟虱蚜4种药剂防效比较表明,高效氯氰菊酯的防治效果最好,持效期长,成本低。

关键词：苜蓿蓟马发生规律药剂防治