干旱地区农业研究2016，Vol.34Issue(4)：139-145,7.DOI:10.7606/j.issn.1000-7601.2016.04.21
不同配方土壤熟化调理剂对新修梯田土壤改良效果的影响
Effect of different formula of modifiers on soil improvement of newly built terrace
摘要
Abstract
To study the effect of different formula of modifiers on soil physical and chemical properties ,nutrient sta-tus of the new terrace and the yield of the crops ,a 3-year field experimental trial was carried out .The results showed that application of different modifiers formula reduced soil bulk density ,increased soil porosity and field water capacity , increased soil organic matter ,total nitrogen ,available phosphorus and available potassium content .The effect of the sur-face layer (0 to 10 cm ) was better than that of the bottom layer (10 cm to 20 cm ) .The soil bulk density of the surface layer was decreased by 5 .14% ~18 .49% , soil porosity and field capacity by 9 .14% ~18 .86% and 10 .96% ~17 .19% ,respectively .Soil organic matter ,total nitrogen ,available phosphorus and available potassium were increased by 56 .11% ~114 .19% ,9 .84% ~78 .69% ,48 .52% ~268 .50% ,70 .10% ~427 .53% respectively . (2 ) Com-pared with CK ,the effect of A treatment was the largest ,with an average annual decrease in the soil bulk density of 0 .06 g·cm-3 ,an average annual increase in soil porosity and field capacity of 3 .15% and 0 .45% .And the average annual increase rate of soil organic matter ,total nitrogen ,available phosphorus and available potassium were 2 .48 g·kg-1 ,0 .2 g·kg-1 ,7 .82 mg·kg-1 ,129 .23 mg·kg-1 ,respectively .The effects of other treatments showed an order of B>C ,D ,E>CK .(3) The application of modifiers could improve the crop yield and water use efficiency .Take A formula as an example ,the potato yield was increased by 37 .69% and 50 .93% in 2012 and 2013 ,respectively ,and wheat production by 94 .41% in 2014 compared with CK .The water use efficiency of A treatment significantly was increased by 43 .09% , 48 .71% and 48 .71% in the year of 2012 ,2013 and 2014 ,respectively .Taken together ,we proposed a formula for new terrace on semiarid region of the Loess Plateau .关键词
土壤熟化调理剂/土壤理化性质/土壤养分/产量/水分利用效率Key words
soil modifier/soil physical and chemical property/soil nutrient/yield/water use efficiency分类
农业科技引用本文复制引用
柳燕兰,郭贤仕,姜小风,董博,郭天文..不同配方土壤熟化调理剂对新修梯田土壤改良效果的影响[J].干旱地区农业研究,2016,34(4):139-145,7.基金项目
国家科技支撑计划（2012BAD05B03）；公益性行业（农业）科研专项 （）
