灌溉排水学报2026，Vol.45Issue(2)：31-38,8.DOI:10.13522/j.cnki.ggps.2025192
长期控水灌溉对双季稻产量形成及其稳定性的影响研究
Effects of long-term controlled irrigation on formation and stability of yield of double-season rice
摘要
Abstract
[Objective]Water scarcity and inefficient irrigation are major constraints in paddy rice production,particularly in regions cultivating double-season rice.This paper experimentally investigates the effects of long-term controlled water irrigation on the yield and stability of double-season rice.[Method]The experiment was conducted in a double-season rice field from 2013 to 2019 in Jingzhou City,Hubei Province.There were two irrigation treatments:conventional irrigation(CK)and controlled water irrigation(WI).In each treatment,we measured yield and yield component,biomass,and yield stability indices characterized by the coefficient of variation(CV)and the sustainability yield index(SYI).[Result]Compared with conventional irrigation,controlled irrigation only changed the biomass of early rice by-3.87％to 6.12％,the effective spike numbers by-8.56％to 2.32％,the seed-setting rate by-4.67％to 1.03％,the grain numbers per spike by-9.95％to 5.99％,the 1000-grain weight by-3.54％to-0.54％,the grain yield by-6.69％to 6.70％,and the harvest index by-3.11％to 0.56％.For late rice,controlled irrigation increased the biomass by 0.57％-13.95％,changed the effective spike numbers by-0.21％to 7.46％,seed-setting rate by-1.44％to 8.12％,the grain numbers per spike by-14.12％to 7.08％,the 1 000-grain weight by-0.11％to 2.97％,the grain yield by-0.88％to 9.70％,and the harvest index by-3.72％to 1.97％.Overall,controlled irrigation increased the total yield of double-season rice by 1.07％-7.73％.In addition,controlled irrigation increased the CV of early rice by 10.28％and reduced its SYI by 0.756,while showing no significant effect on late rice.Overall,controlled irrigation did not show a noticeable impact on the yield stability of double-season rice,with the CV of total yield decreasing from 4.83％to 3.79％.Partial least squares path modelling showed that controlled irrigation affected early rice yield negatively and late rice yield positively.Meteorological factors,such as average temperature and rainfall,significantly impacted both yield and biomass of the rice.[Conclusion]Controlled irrigation reduces early rice yield but increases late rice yield.This complementary effect maintains the yield stability of double-season rice.Controlled irrigation is thus a water-saving strategy to sustain paddy fields.关键词
控水灌溉/双季稻/产量形成/产量稳定性Key words
controlled water irrigation/double-season rice/yield formation/yield stability分类
农业科技引用本文复制引用
胡万林,杨伟,王紫嫣,陈曦,苗田田,秦晓波,朱波,易丽霞,王斌..长期控水灌溉对双季稻产量形成及其稳定性的影响研究[J].灌溉排水学报,2026,45(2):31-38,8.基金项目
国家重点研发计划项目(2022YFE0209200,2022YFD2300500) （2022YFE0209200,2022YFD2300500）
湖北省自然科学基金项目(2024AFA078) （2024AFA078）
国家自然科学基金项目(42475204) （42475204）
中国农科院青年创新专项(Y2024QC07) （Y2024QC07）
中国农科院科技创新工程项目(2060302) （2060302）
