Effect of Sowing Quantity on Yield Formation and Lodging Resistance about Direct Seeding Rice

In this paper,effect of sowing quantity on yield formation,lodging resistance and agronomic character about direct seeding rice were analyzed.The results showed that with the sowing quantity increased,basic seedlings and panicles increased,but rapid declined in tiller panicles;grains showed a rapid decline after the first growing trend;grain weight had small changes;yield trend first increased and then decreased;basal internode elongated,upper internode shorten,lodging resistance declined;panicle length shorten,panicle type reduced;plant dry weight became lighter,and plant type smaller.Under the experimental conditions,the best seeding application was 90kg/hm2,and the yield of rice was 8821.5kg/hm2.