天津农业科学2025，Vol.31Issue(9)：15-20,6.DOI:10.3969/j.issn.1006-6500.2025.09.003
山东省冬小麦晚播对产量及相关构成因素的影响分析
Analysis of the Effects of Late Sowing of Winter Wheat on Yield and Related Components in Shandong Province
摘要
Abstract
In order to explore the regulatory mechanism of yield formation under the condition of late sowing of winter wheat and con-struct a stable yield technical system,this study systematically analyzed the influence of sowing delay on yield and yield components by integrating multi-point field test data for many years,deeply explored the yield compensation effect of water and fertilizer regula-tion measures on sowing delay on sowing delay,and scientifically verified the application effect of key technologies such as plastic film mulching.The results showed that the moderate delay of wheat sowing date in Shandong Province could balance the decline of panicle number per unit area through the compensatory effect of grain number per spike,and achieved yield maintenance or increase.When the normal sowing date was earlier than October 8,moderate late sowing within 10 days could increase the yield and spike number,but late sowing within 10 days showed a negative effect.However,when the normal and late sowing times were later than October 18,the output and the components of each yield showed a downward trend with the delay of sowing date.Through the water and fertilizer control measures such as dense supplementary irrigation,fractional topdressing,and reduced combined application,com-bined with the collaborative application of plastic film mulching technology,the contradiction between the sharp decrease of panicle number and the decay of grain weight caused by late sowing can be significantly alleviated,and the optimization and reorganization of yield components can be realized.In conclusion,there was a significant window of sensitive threshold and compensatory effect for the yield formation of winter wheat under late sowing conditions,and the yield stabilization mechanism under late sowing conditions can be constructed by accurately controlling the range of suitable sowing date and supporting the implementation of the collaborative tech-nical system of"water and fertilizer regulation and plastic film mulching".This study provides important technical support for Shan-dong Province to cope with climate change and the contradiction between stubble connection.关键词
冬小麦/晚播/产量/地膜覆盖/补偿效应Key words
winter wheat/late sowing/yield/plastic film mulching/compensation effect分类
农业科技引用本文复制引用
朱喜宁,李敏敏,王肖淑,何晓茵,何小春,胡蝶..山东省冬小麦晚播对产量及相关构成因素的影响分析[J].天津农业科学,2025,31(9):15-20,6.基金项目
阳谷县2024年粮油绿色高产高效行动项目(SDHY-2024-115) （SDHY-2024-115）
