Effect of Nitrogen Fertilizer Management on Yield of Rice Variety Genghe-205
The effect of nitrogen fertilizer management on the yield of a new rice variety"Genghe-205"was studied.The results showed that the highest seedling performance of treatment 1(200 kg pure nitrogen/hm2)was the highest,reaching 283,000 plants/hm2,which was significantly different from other treatments.Treatment 1 had the highest number of available ears(244,000 plants/hm2),which was not significantly different from treatment 2(180 kg pure nitrogen/hm2),but significantly different from other treatments.Treatment 2 had the highest heading rate,reaching 92.0%,and plant height was proportional to the amount of nitrogen fertilizer.Ear length of treatment 1 was 22.1 cm,which was significantly different from that of other treatments,was 155.3 grains per ear,which was not significantly different from that of treatment 2.The highest setting rate and 1000-grain weight of treatment 2 were 90.5%and 25.6 g,respectively.The yield of treatment 2 was the highest,reaching 9,276 kg/hm2.According to the agronomic characters,seed index and yield performance of Genghe-205,180 kg pure nitrogen/hm2 was the best nitrogen application rate.
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