凹凸棒石保水剂对小麦土壤养分含量的影响

Effect of Attapulgite Water Retaining Agent on Soil Nutrient Content in Wheat

为了研究凹凸棒石保水剂施用量不同时对小麦土壤养分含量的影响,以济麦22为试验材料,进行了大田试验,设置5个处理,根据凹凸棒石保水剂使用量的不同,分为CK(0kg/667m^2)、T1(0. 5kg/667m^2)、T2(1kg/667m^2)、T3(1. 5kg/667m^2)、T4(2kg/667m^2)。测定了不同处理的小麦土壤理化性质(碱解氮、速效磷、速效钾、有机质)以及微量元素(铁、锌、锰、铜)在小麦不同生长期的变化。结果表明,施用量为1. 5kg/667m^2凹凸棒石保水剂可以有效地提高土壤养分含量,过多的施用量反而会降低土壤养分含量。

In order to study the effect of attapulgite water-retaining agent on soil nutrient content of wheat under different dosage,Jimai No.22 was used as experimental material in the field experiment.Five treatments were set up,which were divided into CK(0kg/667m^2),T1(0.5kg/667m^2),T2(1kg/667m^2),T3(1.5kg/667m^2)、T4(2kg/667m^2),according to the different dosage of attapulgite water-retaining agent.(1.5kg/667m 2)and T4(2kg/667m^2).The physical and chemical properties of Wheat Soil(alkaline hydrolyzable nitrogen,available phosphorus,available potassium,organic matter)and the changes of trace elements(iron,zinc,manganese,copper)in different growth stages were measured.The results showed that the application of 1.5kg/667m^2 attapulgite water retaining agent could effectively increase soil nutrient content,but excessive application would reduce soil nutrient content.Based on the analysis of the results of five treatments,the application of 1.5kg/667m2 attapulgite water-retaining agent had a favorable effect on the increase of soil nutrients.