扎把对倒伏水稻灌浆结实影响研究

Research on Effect of Binding on Grain Filling of Rice Lodging

针对水稻发生倒伏后,扎把对水稻结实率、千粒重及结实指数的影响情况进行试验,结果表明:倒伏对产量影响,主要使结实率降低,其次是千粒重下降;一旦发生倒伏,要积极应对,要迅速排除田间积水,降低田间湿度,减轻次生灾害发生;对于倒得早的田块,采取扎把措施,扎地上1/3处,松紧适度,4～6穴扎成一个小把,成鼎立之势,并适时收获。

The effect on seed rates, 1000 grain weight and seed setting index about binding after rice lodging were tested and the result indicated that main effect about lodging on yield were reducing seed rates, secondly were reducing 1000 grain weight. When the lodging happened, it should remove water of field quickly, decreases the humidity, reduce secondary disasters. For the serious lodging, it can bind plants at position of 1/3 over ground with tightening-moderate, binding a bundle with 4-6 hole and harvest in good time.