不同配方液体滴灌专用肥的肥效研究

Studies on the Effect of Liquid Fertilizer in Different Formulation of Drip Irrigation

对膜下滴灌棉花施用3种配方液体滴灌专用肥进行肥效试验研究,结果表明:随水施用液体滴灌专用肥可有效促进棉花干物质积累,增加产量,提高肥料利用率。其中A型(N15.7%,P2O57.8%,K2O1.5%)液体滴灌专用肥适宜于砂质土棉田,B型((N18.9%,P2O54.7%,K2O1.4%)适合壤质土棉田施用,而C型(N20.6%,P2O53.1%,K2O1.3%)则在粘质土棉田施用效果较好。

The effect of liquid fertilizre in different formulation on cotton drip irrigation was studied through field experiments,the results indicates that the dry-matter accumuiation,yield and the plant recovery of nutrient were promoted by using acid liquid fertilizer of cotton drip irrigation dissolved in water.The kind of 'A' (or the number A)is fit for sand soil,the kind of 'B' suits to loam soil,and the kind of 'C' is better in clay soil.