分期施钾对不同质地土壤麦田冬小麦干物质积累和产量的影响

胡鑫慧, 谷淑波, 朱俊科, 王东

Effects of applying potassium at different growth stages on dry matter accumulation and yield of winter wheat in different soil-texture fields

HU Xin-Hui, GU Shu-Bo, ZHU Jun-Ke, WANG Dong

表2 试验地0~20 cm土层播种前土壤养分含量

Table 2 Soil nutrient content in 0-20 cm soil layer of experimental plots before sowing

年度 Year 试验地 Experimental plot 有机质 Organic matter (%) 全氮 Total nitrogen (g kg‒1) 碱解氮 Hydrolysable nitrogen (mg kg‒1) 速效磷 Available phosphorus (mg kg‒1) 速效钾 Available potassium (mg kg‒1) 2018-2019 粉壤土Powder loam 1.02 1.91 84.14 30.38 118.91 沙壤土Sandy loam 0.94 1.79 78.82 22.85 97.06 2019-2020 粉壤土Powder loam 1.12 1.96 86.33 30.74 116.48 沙壤土Sandy loam 0.89 1.66 77.65 23.79 94.03