江西农业学报2024，Vol.36Issue(11)：84-90,7.DOI:10.19386/j.cnki.jxnyxb.2024.11.012
鲁西南不同降水年型对冬小麦生长及产量的影响
Effects of Different Precipitation Year Types on Growth and Yield of Winter Wheat in Southwest Shandong Province
摘要
Abstract
Based on the meteorological data of winter wheat growth period in southwest Shandong Province from 2021 to 2023,combined with the wheat field survey data of the whole city,the effects of monthly precipitation during different growth periods on the growth period,yield factors and growth state of winter wheat were analyzed by correlation analysis method,typical case analysis and comparative analysis methods.The results showed that in southwest Shandong wheat region,the correlation between wheat regreening stage and previous monthly precipitation was negative,and the correlation between accumulated precipitation from January to February and regreening stage reached a significant test.The maturity stage was negatively correlated with precipitation in January,and positively correlated with accumulated precipitation from February to April.In 2021,the unusually high precipitation in summer and autumn increased the soil moisture in farmland,and the sowing date of wheat was delayed by about 20 days compared with the normal years.Due to the low accumulated temperature before winter,the number of tall seedlings,tiller number,large tiller number and secondary rooting of winter wheat were less in winter,and the abnormal precipitation after jointing was less.However,due to the good soil moisture in farmland,wheat grew well in the later period.In 2022,wheat was sown during the suitable sowing period,the meteorological conditions were favorable to wheat growth,and the yield factor was significantly better than that in 2021.However,at the filling and maturation stage,more precipitation occurred than usual,affecting wheat filling and ripening,resulting in a decrease in wheat 1000-grain weight and significantly lower wheat bulk density than in 2022.The soil moisture in the field before winter is the key to the formation of wheat yield at the later stage,and more precipitation at the filling and maturity stage has a greater adverse effect on the formation and quality of wheat yield.More scientific and effective field management measures should be taken to reduce the possible adverse effects on winter wheat according to meteorological conditions.关键词
不同降水年型/冬小麦生长/产量/品质Key words
Different precipitation year types/Winter wheat growth/Yield/Quality分类
农业科技引用本文复制引用
张翠英..鲁西南不同降水年型对冬小麦生长及产量的影响[J].江西农业学报,2024,36(11):84-90,7.基金项目
国家小麦产业技术体系(CARS-03-60) （CARS-03-60）
山东省菏泽市气象局重点项目"菏泽市不同降水年型对冬小麦生长及产量的影响". （）
