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The Crop Journal 2018年第5期6卷 482-494页

作者： Guang Chu Tingting Chen Song Chen Chunmei Xu Danying Wang Xiufu Zhang China National Rice Research Institute Chinese Academy of Agricultural Sciences

Compared to drought-susceptible rice cultivars(DSRs),drought-resistance rice cultivars(DRRs)could drastically reduce the amount of irrigation water input and simultaneously result in higher grain yield under water-saving irrigation ***,the mechanisms underlying these properties are *** investigated how improved agronomic traits contribute to higher yield and higher water use efficiency(WUE)in DRRs than in DSRs under alternate wetting and drying(AWD).Two DRRs and two DSRs were field-grown in 2015 and 2016 using two different irrigation regimes:continuous flooding(CF)and *** CF,no statistical differences in grain yield and WUE were observed between DRRs and *** water under the AWD regime was 275–349 mm,an amount 49.8%–56.2% of that(552–620 mm)applied under the CF *** to CF,AWD significantly decreased grain yield in both DRRs and DSRs,with a more significant reduction in DSRs,and WUE was increased in DRRs,but not in DSRs,by 9.9%–23.0% under *** AWD,DRRs showed a 20.2%–26.2% increase in grain yield and an 18.6%–24.5% increase in WUE compared to *** to DSRs,DRRs showed less redundant vegetative growth,greater sink capacity,higher grain filling efficiency,larger root biomass,and deeper root distribution under *** conclude that these improved agronomic traits exert positive influences on WUE in DRRs under AWD.

关键词： Agronomic traits alternate wetting and drying Drought-resistance rice cultivars Grain yield Water use efficiency

Improved yield and Zn accumulation for rice grain by Zn fertilization and optimized water management

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2014年第4期15卷 365-374页

作者： Yu-yan WANG Yan-yan WEI Lan-xue DONG Ling-li LU Ying FENG Jie ZHANG Feng-shan PAN Xiao-e YANG Ministry of Education Key Laboratory of Environmental Remediation and Ecological Health College of Environmental and Resource SciencesZhejiang University College of Agriculture Guangxi University

Zinc（Zn） deficiency and water scarcity are major challenges in rice（Oryza sativa L.） under an intensive rice production *** study aims to investigate the impact of water-saving management and different Zn fertilization source（ZnSO4 and Zn-EDTA） regimes on grain yield and Zn accumulation in rice *** water managements,continuous flooding（CF）,and alternate wetting and drying（AWD） were applied during the rice growing *** with CF,the AWD regime significantly increased grain yield and Zn concentrations in both brown rice and polished *** yield of genotypes（Nipponbare and Jiaxing27）,on the average,was increased by 11.4%,and grain Zn concentration by 3.9% when compared with those under a CF *** fertilization significantly increased Zn density in polished rice,with a more pronounced effect of ZnSO4 being observed as compared with Zn-EDTA,especially under an AWD *** phytic acid content and molar ratio of phytic acid to Zn were also noted in rice grains with Zn *** above results demonstrated that water management of AWD combined with ZnSO4 fertilization was an effective agricultural practice to elevate grain yield and increase Zn accumulation and bioavailability in rice grains.

关键词： Rice alternate wetting and drying Soil fertilization Zinc

Growth,yield and water productivity of dry direct seeded rice and transplanted aromatic rice under different irrigation management regimes

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Journal of Integrative Agriculture 2020年第11期19卷 2656-2673页

作者： Muhammad Ishfaq Nadeem Akbar Shakeel Ahmed Anjum Muhammad Anwar-Ul-haq Department of Agronomy University of AgricultureFaisalabad 38040Pakistan Department of Plant Science University of CaliforniaCalifornia 95616-8780USA Institute of Soil and Environmental Sciences University of AgricultureFaisalabad 38040Pakistan

Sustainability of traditionally cultivated rice in the rice-wheat cropping zone(RWCZ)of Pakistan is dwindling due to the high cost of production,declining water resources and escalating labour ***,farmers and researchers are compelled to find promising alternatives to traditional transplanted rice(TPR).A field study was conducted in Punjab,Pakistan,in 2017 and 2018 to explore the trade-offs between water saving and paddy yield,water productivity and economics of two aromatic rice varieties under dry direct seeded rice(DDSR)and *** experiment was comprised of three irrigation regimes on the basis of soil moisture tension(SMT)viz.,continuous flooded(>–10 kPa SMT),alternate wetting and drying(AWD)(–20 kPa SMT)and aerobic rice(–40 kPa SMT),maintained under TPR and DDSR *** aromatic rice verities:Basmati-515 and Chenab Basmati-2016 were used during both years of *** both years,DDSR produced higher yields(13–18%)and reduced the total water inputs(8–12%)in comparison to *** comparison to traditional continuous flooded(CF),AWD under DDSR reduced total water input by 27–29%and improved the leaf area index(LAI),tillering,yield(7–9%),and water productivity(44–50%).The performance of AWD with regard to water savings and increased productivity was much higher in DDSR system as compared to AWD in TPR *** of DDSR with aerobic irrigation improved water savings(49–55%)and water productivity(22–30%)at the expense of paddy yield reduction(36–39%)and spikelet *** regard to variety,the highest paddy yield(6.6 and 6.7 t ha–1)was recorded in DDSR using Chenab Basmati-2016 under AWD irrigation threshold that attributed to high tiller density and *** economic analysis showed DDSR as more beneficial rice establishment method than TPR with a high benefit-cost ratio(BCR)when the crop was irrigated with AWD irrigation *** results highlighted that with the use of short duration varieties,DDSR cultivation in conjunction wit

关键词： rice establishment aerobic alternate wetting and drying water input tillering yield

Effect of irrigation regime on grain yield,water productivity,and methane emissions in dry direct-seeded rice grown in raised beds with wheat straw incorporation

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The Crop Journal 2018年第5期6卷 495-508页

作者： Zhiqin Wang Daojian Gu Sarah S.Beebout Hao Zhang Lijun Liu Jianchang Yang Jianhua Zhang Jiangsu Key Laboratory of Crop Genetics and Physiology Co-Innovation Center for Modern Production Technology of Grain Crops Yangzhou University Crop and Environmental Sciences Division International Rice Research Institute (IRRI) Department of Biology Hong Kong Baptist University

Dry direct-seeded rice grown in raised beds is becoming an important practice in the wheat–rice rotation system in ***,little information has been available on the effect of various irrigation regimes on grain yield,water productivity(WP),nitrogen use efficiency(NUE),and greenhouse gas emission in this *** study investigated the question using two rice cultivars in 2015 and 2016 grown in soil with wheat straw incorporated into *** seeds were directly seeded into raised beds,which were maintained under aerobic conditions during the early seedling *** irrigation regimes:continuous flooding(CF),alternate wetting and drying(AWD),and furrow irrigation(FI),were applied from 4.5-leaf-stage to *** with CF,both AWD and FI significantly increased grain yield,WP,and internal NUE,with greater increases under the FI *** two cultivars showed the same tendency in both *** AWD and FI markedly increased soil redox potential,root and shoot biomass,root oxidation activity,leaf photosynthetic NUE,and harvest index and markedly decreased global warming potential,owing to substantial reduction in seasonalThe results demonstrate that adoption of either AWD or FI could increase grain yield and resource-use efficiency and reduce environmental risks in dry direct-seeded rice grown on raised beds with wheat straw incorporation in the wheat–rice rotation system.

关键词： Rice(Oryza sativa L.) Dry direct-seeding alternate wetting and drying Furrow irrigation Water productivity Methane emission

Effects of Different Irrigation Management on the Textural Properties of Double-Cropping Late Indica Rice in South China

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Phyton-International Journal of Experimental Botany 2022年第7期91卷 1495-1502页

作者： Ruoyu Xiong Liming Chen Daren Jiang Yingjie Zhou Xueming Tan Xiaohua Pan Yongjun Zeng Jun Zhang Yanhua Zeng Ministry of Education and Jiangxi Key Laboratory of Crop Physiology Ecology and Genetic BreedingJiangxi Agricultural UniversityNanchang330045China Institute of Crop Sciences Chinese Academy of Agricultural SciencesBeijing100081China

In order to investigate the effects of different irrigation management on the textural properties of two different double-cropping late indica rice,the effects of three irrigation management including conventional irrigation(CK),constant irrigation(CI)and alternate wetting and drying(AWD)on textural properties has been researched under field conditions of two *** results indicated that the firmness,cohesiveness and chewiness were decreased under AWD treatment,and the stickiness was increased compared with CK,while the textural properties under CI treatment showed the opposite trend with AWD ***,AWD treatment signifi-cantly improved the springiness of TY871 compared with CK and CI treatment,but had no significant effect in RYHZ,suggesting improvement of the cooking and eating quality of TY871 under AWD *** analysis showed that the chewiness was positively correlated with the firmness and cohesiveness,and the cohesiveness was positively correlated with the *** could promote the textural properties of high-quality late indica rice in South China whereas CI treatment has shown the disadvantage of the textural properties,which will provide useful information for the improvement of cooking and eating quality of rice.

关键词： Indica rice alternate wetting and drying textural properties correlation analysis