不同施肥方式对绥粳4号品质的影响

摘要

[目的]研究绥粳4号的最佳施肥方式.[方法]采用二次回归正交旋转组合设计,4个因子分别为基施氮肥比例(X1)、氮肥施入量(X2)、磷肥施入量(X3)、钾肥施入量(X4),每个处理设置5个水平,研究不同施肥量、不同基施氮肥比例对黑龙江省第二积温带主栽水稻品种绥粳4号品质的影响.[结果]基施氮肥比例、氮、磷、钾对绥粳4号品质效应回归方程:Y=64.28+0.26X1+0.12X2+0.14X3+0.11X4-0.005X12-0.000 7X22-0.000 9X23-0.001X24+0.000 6X1X2+0.000 2X1X4+0.000 2X2X4-0.000 1X3X4.当食味评分达最高值83.1时,绥粳4号的基施氮肥比例、施氮量、施磷量、施钾量分别为35.7%、112.8 kg/hm2、70.8 kg/hm2、51.7 kg/hm2.[结论] 该研究为水稻品种的合理施肥提供理论依据.%[Objective] To study the best fertilization model which should been fit for Suijiang japonica 4 of rice varieties.[Method] The test was made by quadratic regression orthogonal rotational combination, four factors in the experiment were X1(basal nitrogen ratio),X2(the amount of nitrogen),X3(the intake of phosphate) and X4(the intake of potash),five levels were set in each treatment.The anesthetic effect of different fertilizing amount and nitrogen application ratio on the quality of Suijiang japonica 4 which had been the main rice varieties on second temperate zone of Heilongjiang was studied.[Result] The regression equation of quality effect on Suijiang japonica 4 in the four treatments were as follow: Y=64.28+0.26X1+0.12X2+0.14X3+0.11X4-0.005X12-0.000 7X22-0.000 9X23-0.001X24+0.000 6X1X2+0.000 2X1X4+0.000 2X2X4-0.000 1X3X4.Basal nitrogen ratio, amount of nitrogen, phosphate and potash respectively were 35.7%,112.8 kg/hm2,70.8 kg/hm2,51.7 kg/hm2 when taste score was to reach peak value of 83.1.[Conclusion]The study provided theoretical basis for rational fertilization of rice varieties.