Effects of Nitrogen Application Rate on Yield and Yield Components of Mechanical-dibbling Rice
DONG Yangyang;JIA Qingqing;ZHU Xinchun;LIU Zhangsheng;WANG Yafeng;Songjiang Agricultural Technology and Popularization Center;
The effects of nitrogen application rate on yield and yield components of mechanical-dibbling rice were studied, with the late season rice Xiushui 114 as material. The results showed that, nitrogen application rate and the yield of machine-dibbling rice had one-place quadratic parabola relationship, which was significantly related, the proper amounts of nitrogen application rate on machine-dibbling rice was 300 kg/hm~2. With the increase of nitrogen application rate, the effective panicles and the highest number of seedlings were increased; filled grains per panicle, seed setting rate, 1 000-grain weight and percentage of earbearing tiller were reduced;the dry matter accumulation in jointing stage and heading stage were increased; plant height and basal internode length were extended.
【CateGory Index】： S511.22