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Effects of planting methods on yield and quality of different types of japonica rice in northern Jiangsu plain, China

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Journal of Integrative Agriculture 2018年第12期17卷 2624-2635页

作者： BIAN Jin-long XU Fang-fu HAN Chao QIU Shi GE Jia-lin XU Jing ZHANG Hong-cheng WEI Hai-yan Jiangsu Key Laboratory of Crop Genetics and Physiology/Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops/Agricultural College Yangzhou University

Mechanical transplanting with carpet seedlings(MC) and mechanical direct seeding(MD) are newly developed planting methods, which increase in popularity and planted area each year. Knowing the difference for yield and rice quality under different planting methods is of great importance for the development of high quality and yield cultivation techniques under mechanical conditions. Therefore, three kinds of japonica rice including hybrid japonica rice, inbreed japonica rice, and soft rice were adopted as materials. And the differences in the quality of processing, appearance, cooking and eating quality, nutrition, and the rapid viscosity analyzer(RVA) profile were studied to reveal the effects of planting methods on yield and quality of different types of japonica rice. Results showed that the milled rice and head rice rates under MC was significantly higher than those under MD, and the processing quality of inbreed japonica rice was the most stable. Compared with MC, length/width ratio of rice under MD was significantly increased, and chalkiness rate, size, and degree were significantly decreased. The protein content under MD was lower than that under MC. MC showed higher peak viscosity and breakdown value than MD. The taste value was the greatest for soft rice, followed by inbreed japonica rice, and then by japonica hybrid rice, with no significant differences resulting from planting methods. Compared with MC, MD significantly improved the appearance quality, though processing quality and nutritional quality were decreased. And there was no significant difference in cooking and eating quality between MC and MD. Under different planting methods, the appearance quality of inbreed japonica rice changed the most and the processing quality was the most stable. The nutritional, cooking and eating quality of soft rice changed the least. Therefore, according to the different planting methods and market needs, selecting the appropriate rice varieties can reduce the risks in

关键词： hybrid japonica rice inbreed japonica rice soft rice planting method rice quality

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The Effect of Organ Temperature on Total Yield of Transplanted and Direct-Seeded Rice(Oryza sativa L.)

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Phyton-International Journal of Experimental Botany 2023年第11期92卷 2999-3019页

作者： Ziwei Li Lifen Huang Zhongyang Huo Min Jiang Jiangsu Key Laboratory of Crop Genetics and Physiology/Jiangsu Key Laboratory of Crop Cultivation and Physiology Agricultural College of Yangzhou UniversityYangzhou225009China Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops Yangzhou UniversityYangzhou225009China

The canopy temperature of rice is an important index that directly reflects the growth and physiological state of rice,and affects the yield of rice plants to a great *** correlation between the temperatures of different rice organs and canopy in different growth stages and the grain yield is *** stability and universality of these correlations must be *** conducted a pot experiment using two rice varieties and two temperature treatments(high temperature treatment was carried out at the beginning of heading stage for 10 days).We measured rice organ temperature during seven stages of growth using a high-precision infrared thermal *** showed that the optimal observation period for the rice canopy temperature was 13:*** the rice variety did not significantly impact the canopy or organ temperature(p>0.05),the different organs and canopy exhibited significantly different temperatures(p<0.05).The correlations between the leaf,stem,panicle,canopy–air temperature differences and seed setting rate,theoretical and actual yields were the strongest during the milk *** them,the correlation coefficient betweenΔT_(s) and theoretical and actual yields was the highest,the relationship between theoretical yield(Y)andΔT_(s)(X)was Y=−5.6965X+27.778,R^(2)=*** withΔT_(l),ΔT_(p) andΔTc,ΔT_(s) was closely related to the main traits of plants.ΔT_(s) could better reflect the growth characteristics of rice thanΔT_(c),such as dry matter accumulation(r=−0.931),SPAD(r=0.699),N concentration(r=0.714),transpiration rate(r=−0.722).In conclusion,stem temperature was more important indicator than canopy *** temperature is a better screening index for rice breeding and cultivation management in the future.

关键词： planting method canopy temperature organ temperature grain yield

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Performance of Medicinal and Aromatic Chamomile (Matricaria chamomilla L.) under Different planting, Manure cum Fertilizer Regimes in Kathmandu Valley

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Journal of Agricultural Science and Technology(B) 2021年第1期11卷 26-45页

作者： Barakoti Tanka Prasad Outreach Research Division Nepal Agricultural Research Council(NARC)Kathmandu 44600Nepal

New and old genotypes of German chamomile(Matricaria chamomilla Linn.)were experimented under different planting methods,manure and fertilizer combinations first time in Kathmandu *** researches aimed at evaluating genotypes performance,identifying suitable planting method and optimum combination of manures and *** germplasm evaluation experiment was conducted at the National Agriculture Research Institute(NARI)field,Khumaltar during *** method trial was laid out in randomized complete block and manure cum fertilizer trial was in Latin square design(LSD).The results showed good performance of chamomile growth,development and oil *** agronomic traits had average figures in all experiments comparable to chamomile growing *** data differed significantly and at *** genotype produced relatively higher number of branches,leaves and flower heads maintaining more plant *** was higher in row sown and transplanted plots,row sowing found more *** plots delayed ***(0.95%)and broadcasted(0.80%)chamomile gave higher oil percentage,no difference found between ***(p<0.05)higher and at par branch numbers,flower heads,biomass yield,plant height were recorded in the treatments with higher rate of farm yard manure(FYM)20 t/ha followed by combined application of NPK 60:40:20 kg/ha plus manure 10 t/*** content was the highest(0.95%)in FYM(20 t/ha)applied plots followed by combined fertilization(0.80%).Despite inferior to treatment N:P:K 60:40:20 kg/ha only to enhance growth and oil production,other results suggested suitable technology and successful cultivation of chamomile in valley conditions are recommended.

关键词： German chamomile performance planting method manure&fertilization cultivation Kathmandu valley

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Productive Performance and Response of Green Chilli （Capsicum annum L.） to Drip Irrigation Schedules under Water Limited Conditions

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Journal of Agricultural Science and Technology 2010年第2期4卷 48-55页

作者： B.K. Ramachandrappa H.V. Nanjappa T.M. Soumya B.N. Prabhakara Department of Agronomy Agriculture College University of Agricultural Sciences GKVK Bangalore Karnataka 560065 India

Drip irrigation is often preferred under water limited conditions over the other irrigation methods because of its high water application efficiency on account of reduced surface evaporation and percolation losses. The major limitation of drip irrigation is its initial investment. Therefore, there is a need to reduce the cost of drip installation by altering the planting geometry besides enhancing the productivity and moisture use. Results of the two years field study conducted on sandy loam soils revealed that drip irrigation at 1.0 Epan with normal row system （60 cm×30 cm） registered significantly higher yield of green chilli（ 14.08 t ha^-1） which was on par with 0.8 Epan two rows paired system （90-45-90 cm×30 cm：13.45 t ha^-1） and significantly lowest was noticed with 0.6 Epan four rows paired system（45-45-45-120 cm×30 cm ）（5.50 t ha^-1）. The quality parameters viz; TSS and Ascorbic acid were significantly higher with drip irrigation at 1.0 Epan with normal row system and lowest was observed with 0.6 Epan four rows paired system. Total water used was maximum in 1.0 Epan （691.7 mm） followed by 0.8 Epan irrigation （590.2 mm） and the lowest was recorded in 0.6 Epan irrigation （488.8 mm）. There was a saving of water by 14.68 percent and 29.34 percent under 0.8 and 0.6 Epan drip irrigation schedules respectively over 1.0 Epan. Indications of less leaf water potential in 1.0 Epan drip irrigation （-0.58 to-0.67 MPa） followed by 0.8 Epan （-0.61 to-0.68 MPa） and more negative leaf water potential in 0.6 Epan （-0.71 to-0.88 MPa） in relation to water applied were observed. Water use efficiency recorded was maximum in 0.6 Epan normal row systems （24.1 Kg ha-mm^-1） and the least was recorded in 0.6 Epan four rows paired system （11.3 Kg ha-mm^-1）. The significantly higher root growth characters such as root length （42.6 cm）, number of primary roots （28.7）, root dry weight （11.05 g plant^-1） and maximum depth of penetration were recorded with 0.6 Epan four rows paired system a

关键词： Drip irrigation greenchilli planting method water requirement leaf water potential root proliferation

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Development and Transition of Rice planting in China

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Agricultural Science & Technology 2012年第6期13卷 1270-1276页

作者：张玉屏朱德峰熊洪陈惠哲向镜林贤青中国水稻研究所稻作中心浙江杭州310006 四川农科院水稻高粱研究所四川泸州646100

[Objective] This paper aimed to clarify the rice planting methods and its supporting technology to be developed in rice producing areas in China. [method] Evolvement of rice planting methods in rice producing areas in China and in representative rice-growth countries abroad, its characteristics, adaptability and key issues were analyzed. [Result] The analysis of development of rice planting method in China and abroad indicated that rice planting method was adapted to rice-based cropping system and ecological environment, and its transition accompanied with social and economic development. With agricultural labor transfer from agriculture to other industries since 1990’s, rice seedling throwing was gradually applied and in recent decades, while direct seeding and machine transplanting were practiced. Now, hand transplanting is still the main rice planting method, adopted in 50% of national rice planting area; seedling throwing, direct seeding and machine transplanting are conducted in 25% , 12% and 13% of the national rice planting area. [Conclusion] Machine transplanting should be a leading rice planting method. Though area covered with machine direct seeding is still small up to now, it can be practiced in some rice growing area due to labor saving and low cost. Leading planting methods and its supporting key technologies are proposed in various rice producing areas in the future.

关键词： Rice planting method Machine transplanting Seedling throwing Direct seeding Ratoon

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