种植密度与氮磷钾肥配比对甜荞农艺性状和产量的影响

Effects of Density and Combined Fertilization of N,P and K on Agronomic Traits and Yield in Sweet Buckwheat

通过田间小区试验,研究了不同种植密度和总施量相同条件下的氮磷钾肥比例对甜荞麦形态和产量的影响。结果表明:荞麦吉乌1号有较宽的适宜密度幅度,其种植密度为36~45万株·hm^(-2)时有较高的产量。氮肥是影响吉乌1号株高生长、分枝和产量的主导因素,增加钾肥比例有利于提高吉乌1号。在本地区吉乌1号适宜的种植密度和肥料组合为密度45万株·hm^(-2),氮30 kg·hm^(-2)、磷15 kg·hm^(-2)和钾45 kg·hm^(-2)。

The effect of planting density and fertilizer level on sweet buckwheat was studied by field experiment. The results indicated that Jiwu 1 had a greater planting density range and got the higher yield when planting density was 3.6 ×10^5-4.5×10^5 plant·hm-2. N fertilizer was the key factor on plant height,branching and yield of Jiwu 1. K fertilizer was benefit to increase the yield of Jiwu 1. The optimum planting density and fertilizer scheme for Jiwu 1 was 4.5×105 plant·hm-2, N30 kg· hm-2, P15 kg· hm-2, K 45 kg · hm-2.