
施氮量对机穴播水稻产量及其构成因素的影响
Effects of Nitrogen Application Rate on Yield and Yield Components of Mechanical-dibbling Rice
董洋阳,贾晴晴,朱新春,刘章生,王雅凤 . 施氮量对机穴播水稻产量及其构成因素的影响[J]. 中国稻米, 2018 , 24(3) : 105 -107 . DOI: 10.3969/j.issn.1006-8082.2018.03.024
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/hm2. 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.
Key words: nitrogen application rate; mechanical-dibbling; yield; yield components
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