淤地坝增产效益监测分析  

Analysis on Monitoring Increasing Production Benefis with Silt Arresters

作　　者：马安利[1] 

机构地区：[1]黄河上中游管理局,陕西西安710021

出　　处：《人民黄河》2012年第10期92-93,96,共3页Yellow River

基　　金：水利部公益性行业科研专项(200701042)

摘　　要：选择山西省河曲县树儿梁小流域坝系,通过调查与布设样地监测相结合的方法,2006—2010年连续5 a观测在相同条件下,坝地、梯田及坡耚地土壤含水量、碱解氮含量、速效磷含量和速效钾含量在玉米不同发育期的变化情况,获取了淤地坝增产效益与土壤养分监测数据。结果表明:5 a中坝地、梯田、坡耕地的平均产量分别为6 129.45、4 596.95、3 515.01 kg/hm2;在土壤含水量方面,不同发育期都是坝地>梯田>坡耕地;不同发育期土壤有机质含量、碱解氮含量、速效磷含量和速效钾含量也都是坝地>梯田>坡耕地。The study selected the silt arrester system of Shuerliang small watershed in Shanxi Province as a research object, took the way of investigation combining with layout sample monitoring. From 2006 to 2010, researchers observed the changes of soil water content, alkali hydrolysable nitrogen content, available phosphorus and available potassium content in dam land, terrace farmland and slope farmland during maize growing up in the same conditions and obtained five years monitoring data of silt arrester increasing production benefit and soil nutrient. The results show that the average yield of dam land, terrace and slope farmland is 6 129.45 kg/hm^2, 4 596.95 kg/hm^2 and 3 515.01 kg/hm^2 respectively. The dam land soil water content is greater than that of terrace farmland, and slope farmland＇ s is the smallest of the three. The organic matter content, alkali hydrolysable nitrogen content, available phosphorus and available potassium content are the same rule of soil water content.

关 键 词：淤地坝 土壤含水量 土壤养分 增产效益 

分 类 号：S157[农业科学—土壤学]