摘要
采用田间小区试验,研究了不同氮肥施用量对湘早籼45号产量的影响。研究结果表明,不同的氮肥施用量对湘早籼45号产量的影响较大,在0 kg/hm2到180 kg/hm2纯氮施用量梯度上升时,湘早籼45号的产量也呈上升趋势,在180 kg/hm2纯氮的基础上再增加氮肥的用量反而会使湘早籼45号的产量降低。综合分析在生产上湘早籼45号的纯氮施用量以不超过180 kg/hm2能获得产量和效益的最大化。
The influences of different nitrogen fertilizer rates on the yield of Xiangzaoxian45 were studied through the field plot experiment. The results showed that different nitrogen fertilizer rates had huge influences on the yield of the Xiangzaoxian45 that it was positively correlated with the nitrogen fertilizer increasing to 180 kg/hm2 and reduced with the nitrogen fertilizer exceeding the 180 kg/hm2. Comprehensively analysis indicated that the Xiangzaoxian45 got the highest yield and benefit when the nitrogen fertilizer rate was within 180 kg/hm2.
出处
《湖南农业科学》
2011年第10期48-50,共3页
Hunan Agricultural Sciences
关键词
早稻
湘早籼45号
氮肥用量
产量
early rice
Xiangzaoxian45
nitrogen fertilizer rate
yield
