论文部分内容阅读
本文采用正交区组旋转组合设计，定量分析了氮、磷、钾不同施肥量对水稻产量构成因素的影响，并分别建立了其数学模型.对模型的效应分析结果表明：施氮量对产量构成因素的影响最大，一般增施氮肥可以增加平方米穗数和重穗粒数，但结实率和千粒重反而呈下降趋势；施磷量的增加有利于提高平方米穗数、穗粒数和结实率，但不利于千粒重的提高；施钾量的增加有利于结实率和千粒重的增加.
In this paper, the orthogonal block rotation combination design was used to quantitatively analyze the effects of different N, P and K fertilizers on the yield components of rice and their mathematical models were established respectively.The results of the model analysis showed that the effects of nitrogen application rate on yield Composition factors have the greatest impact. Generally, increasing nitrogen fertilizer can increase the number of spikes per panicle and the number of heavy spikelets per plant, but the seed setting rate and 1000-grain weight decrease. On the contrary, the increase of phosphorus application is helpful to increase the number of spikelets per panicle, But not conducive to the improvement of 1000-grain weight. The increase of potassium application was beneficial to the increase of seed setting rate and 1000-grain weight.