灌溉排水学报2023，Vol.42Issue(12)：44-52,9.DOI:10.13522/j.cnki.ggps.2023158
不同灌溉模式下缓释施肥水平对水稻生长特性、产量和品质的影响
Combined Effect of Slow-release Fertilizer and Irrigation Method on Growth,Yield and Grain Quality of Rice
摘要
Abstract
[Objective]Slow-release fertilizer is efficient and environmentally friendly but its effectiveness is closely related to soil water.This paper studies the combined impact of slow-release fertilization and irrigation method on growth,yield and quality of rice.[Method]The pot experiment was conducted from May to September in 2021 at Hubei Irrigation Central Experimental Station.It consisted of flood irrigation(W1)and alternate wetting and drying irrigation(W2).Each irrigation treatment had 6 fertilizations:conventional fertilization(F100),fertilizations using 120％(SF120),110％(SF110),100％(SF100),90％(SF90)and 80％(SF80)of the fertilizer used in F100 but replacing them by controlled-release fertilizer.In each treatment,we measured the plant height,numbers of tillers,chlorophyll SPAD,yield and its components,as well as amylose and gluten protein contents in each growth stage.The entropy weight TOPSIS method was used for comprehensive evaluation of the treatments.[Result]Compared with F100,on average over the two irrigation treatments,SF100 increased plant height,tiller numbers,grain yield and glutenin content by 24.65％,34.90％,11.90％and 32.72％,respectively,while reduced the chlorophyll degradation and amylose content by 24.98％and 7.37％,respectively.Compared with W2,W1 increased the average plant height,chlorophyll degradation,and yield by 19.01％,20.73％,and 12.82％,respectively,and reduced the number of tillers and the contents of amylose and glutenin by 31.05％,0.30％,and 0.90％,respectively.Under Wl,the yield of SF90 was 12.41％higher than that of SF120;the amylose content in SF90 was 6.68％lower than that in SF120;the glutenin content in SF90 was 5.33％lower than that in SF110.The entropy weight TOPSIS method showed that the relative yield of WI+SF90 was the closest to the potential yield,with the comprehensive score reaching 0.985.[Conclusion]Combining flood irrigation with a 10％reduction of conventional fertilization by using slow-release fertilizer(648 kg/hm2 fertilizer)is a promising irrigation-fertilization for rice production in the middle and low reaches of the Yangtze River basin.关键词
缓释肥/施肥水平/水稻生长特性/产量/品质/熵权TOPSIS法Key words
slow release fertilizer/fertilization level/growth characteristics/yield/quality/entropy weight TOPSIS method分类
农业科技引用本文复制引用
汪乐养,何军,华克骥,张才军,叶子米,张磊..不同灌溉模式下缓释施肥水平对水稻生长特性、产量和品质的影响[J].灌溉排水学报,2023,42(12):44-52,9.基金项目
国家自然科学基金项目(51909092) （51909092）
湖北省水利重点科研项目(HBSLKY201801、202207) （HBSLKY201801、202207）
