摘要
Abstract
The lodging test was carried out in the early stage and late stage of grouting of summer corn , and then artificial loading was carried out at 3 and 7 days after lodging,the yield loss of the different lodging patterns and the yield of different felling methods were compared.The re-sults showed that in the early stage of the grouting,the yield propped corn root was higher than that of the non-propped after root lodging, the yield reduction rate of lodging propped was 18.90%at 3 days, that was 11.71%at 7 days, and that of non-propped was 24.80%;Stem lodging, the yield reduction rate of lodging propped was 40.41%at 3 days,that was 42.87%at 7 days, and that of non-propped was 21.80%.In the early stage of the grouting,the yield of the propped and non-propped was not very different;Stem lodging,the yield and 100-grain weight of non-propped were much higher than that of propped;the yield reduction rate of lodging non-propped was 3.79%, the yield reduction rate of lodging propped was 18.54% and 13.36% at 3 days and 7 days respectively .Therefore, in the early stage of the grouting, the root down to up in time, to mini-mize production losses.Root can not prop in the late stage of the grouting,any stem lodging fold period need not prop up at any time.On the basis of the experiment, the assessment model of summer corn lodging disaster disaster was established, and the practicability was strong.关键词
夏玉米/大风暴雨/根倒/茎折/产量/灾损评估Key words
Summer corn/Gale rainstorm/Root pour/Stems to fold/Yield/Damage assessment分类
农业科技
