不同施肥水平对大同34号谷子产量的影响

Effects of different fertilization levels on yield of Datong 34 millet

以谷子"大同34号"为材料,通过"3414"试验,得出不同施肥配比对谷子产量、经济性状和土壤中养分的影响。在当前谷子生产中,磷素是制约生产的主要因素,必须施够纯磷8~12 kg/667m^2;氮素经过连续多年施用,已经达到一定的供给能力,不需要大量施用,只需施够生产中所需纯氮即5~10 kg/667m^2,多施反而会造成营养生长过于旺盛减产;在沙壤土质中速效钾含量还比较低,应当施用纯钾2 kg/667m^2。

In this paper, with millet ＂Datong 34＂ as the material, the effects of different fertilization ratio on yield,economic characters of millet and the soil nutrient were obtained through the ＂3414＂ test. In the current millet production, phosphorus was the main factor restricting the production in local soil. we must apply enough pure phosphorus of 8~12 kg/667m^2. After successive years of application, nitrogen in the soil had reached a certain ability to supply, so it was enough to fertilizer pure nitrogen needed for the production, pure nitrogen of 5~10 kg/667m^2 should be applied. More fertilizer will cause too strong vegetative growth to reduce production. The content of available potassium in sandy loam soil was still low, and it should be applied to pure potassium of 2 kg/667m^2.