施用钾和腐植酸对相同土壤性质下的小麦(Triticum Aestivum L. var. Delfii)产量和养分含量的影响

Effects of Potassium and Humic Acid Applications on Yield and Nutrient Contents of Wheat(Triticum Aestivum L.var.Delfi)with Same Soil Properties

于2014年至2015年进行田间试验。本研究中,选用3种K施用量(0、10和20 kg K/da)的K_2SO_4肥(50%K_2O)和3种HA施用量(0、20和40kgHA/da)的商品腐植酸(85%HA)。HA施用量的增加对试验区土壤pH、盐分、有机质、P、Mg、Fe、Mn含量的影响在P<0.01水平上差异显著。研究表明,K施用量的增加对试验区土壤盐分、Mg、Fe和Cu含量的影响在P<0.01水平上差异显著。HA施用量的增加对小麦生物产量、籽粒产量和收获指数有显著影响(P<0.01),而K对小麦生育期没有任何影响。HA施用量的增加对籽粒和秸秆养分含量,P、K、Ca、Mg、Fe和Zn均有显著影响(P<0.01)。K施用量的增加对P、K、Mg、Fe、Zn含量有显著影响(P<0.01)。结果表明,在改善土壤性质、作物产量和养分含量方面,施用HA比施用K更有效。

This study was conducted in the farmer field between the years 2014 and 2015.In this study,3 doses of potassium(K)(0,10 and 20 kg/da)of K,SO4(50%K,O)fertilizer and 3 doses of humic acid(HA)(0,20 and 40 kg/da)(85%HA)were used.Increase in the HA dose reflected significant effects on pH,salt,organic matter,phosphorus,magnesium,iron,and manganese contents of the experiment area at P<0.01 level.It was determined that increased potassium applications affected the salt,magnesium(Mg),iron(Fe)and copper(Cu)contents at P<0.01 level.Increased HA application on plant growth criteria had a significant effect on biological yield,grain yield and harvest index(P<0.01).However,K did not reflect any effect on the growth stage of wheat.Increased number of HA applications on grain and straw nutrient content were found to have significant(P<0.01)effects on P,K,Ca,Mg,Fe and Zn.Increased potassium applications had an effect on the P,K,Mg,Fe and Zn contents with a significant level(P<0.01).It was observed that HA applications were more effective than potassium applications on both general soil properties and yield and nutrient content.