不同氮磷钾配比施肥对云烟87烤烟农艺性状及经济性状的影响

Effects of Different Combination Ratios of N,P and K Fertilizer on Agronomic Characters and Economic Characters of Yunyan 87

为研究不同氮、磷、钾配比对云烟87农艺性状及经济性状的影响,探索云烟87在四川泸州栽培的最佳肥料配比,本试验采用氮、磷、钾三因子的高、中、低水平进行正交设计,分析了不同氮、磷、钾水平对云烟87生育期、抗病性、农艺性状和经济性状的影响。结果表明,氮、磷、钾的配比不同会影响烟株的农艺性状、生长的整齐度、抗病性和经济性状,其中氮含量是主要的影响因素。随着氮含量的增加将有效改善烟株的生长,提高经济效益,同时提高磷和钾的含量将有效降低烟叶发病率。综合来看,最佳的施肥配比为纯N 90.0 kg/hm^2、P_2O_582.5 kg/hm^2、K_2O 225.0 kg/hm^2以及纯N 90.0 kg/hm^2、P_2O_590.0 kg/hm^2、K_2O 247.5 kg/hm^2。

Using orthogonal design,the effects of different combinations ratios of N, P and K fertilizer on the growth period,the resistance,the agronomic characters and the economic characters of Yunyan87 were analyzed in this paper. The results showed that different combination ratios could affect agronomic characters, growth uniformity, disease resistance and economic characters of tobacco plants, nitrogen content is the most important factor. Increasing the content of nitrogen, phosphorus and potassium could effectively reduce the incidence of tobacco leaves and increase economic benefits. On the whole, the optimum combination ratios of N, P and K fertilizer were as follow ： N 90.0 kg/hm^2, P2O5 82.5 kg/hm^2, K2O 225.0 kg/hm^2; N 90.0 kg/hm^2, P2O5 90.0 kg/hm^2, K2O 247.5 kg/hm^2.