农学学报2023，Vol.13Issue(12)：28-33,6.
夏大豆鼓粒施氮效应及与粒重的相关性
Nitrogen Effect on Grain Bulging and Its Correlation with Grain Weight of Summer Soybean
摘要
Abstract
To quantitatively analyze the nitrogen effect on grain bulging and its correlation with grain weight of summer soybean,the field fixed-point experiment of different nitrogen application was conducted in 2020 and 2021 summer soybean growing seasons.The variation patterns of 100 grain weight and bulging rate of summer soybeans with bulging days under different nitrogen application levels,as well as the internal relationship between various bulging parameters and grain weight were analyzed systematically,and the nitrogen application effect of summer soybeans and its correlation with grain weight were clarified.The result showed that the 100-grain weight in different treatments showed a"Logistic"curve with the increase of grain bulging days;the grain bulging rate showed a"single peak"curve with the increase of grain bulging days.Excessive or deficient application of nitrogen could shorten the duration of bulging,and the average bulging rate was increased in a certain extent.There was a significant positive correlation between grain weight and the duration of bulging period of summer soybean,and a very significant positive correlation between the duration of fast-growing period and slow-growing period.However,the rate and duration of grain bulging were mainly determined by the rate and duration of grain bulging in the fast and slow growth stages.Nitrogen application could increase the grain weight of summer soybean,but excessive nitrogen application could inhibit the formation of grain weigh.Extending the duration of bulging,especially in the middle and late stages of bulging,was beneficial to the formation of grain weight.关键词
夏大豆/鼓粒/施氮效应/粒重/相关性Key words
summer soybean/grain bulging/nitrogen effect/grain weight/correlation分类
农业科技引用本文复制引用
陈昱利,杨平,徐冉,毕海滨,巩法江,王东峰,卓玛,高明慧..夏大豆鼓粒施氮效应及与粒重的相关性[J].农学学报,2023,13(12):28-33,6.基金项目
山东省重点研发计划项目"夏大豆水肥精准管理关键技术研究与示范应用"(2019GNC106129). （2019GNC106129）
