会议论文

Demonstration Research for the New Countryside Building at Village Level--Case Study in Gonglian Village of Hengnan County,Hunan Province

中文

农业经济问题

Problems of Agricultural Economy

1000-6389

2007

30

04

77-80

10.13246/j.cnki.iae.2007.04.017

本校为其他机构

采用批量平衡法,研究了除草剂咪唑乙烟酸在东北地区4种代表性土壤中的吸附特征.试验结果表明, Freund lich等温式最适合描述咪唑乙烟酸在土壤中的吸附行为,4种土壤对咪唑乙烟酸的吸附能力大小顺序为:黑土>水稻土>盐碱土>白浆土.咪唑乙烟酸的吸附常数Kf与土壤有机质含量呈显著正相关.经过过氧化氢去除土壤有机质后,4种土壤对咪唑乙烟酸的吸附量均大大降低,仅为原土的32.74%--46.07%,其吸附常数与土壤pH呈负相关.表明影响土壤对咪唑乙烟酸吸附能力的主要因素是土壤有机质和pH.在土壤-水环境系统pH

The article did foundational evaluation and analysis for the new countryside building in Gonglian Village of Hengnan County, Hunan Province, which used the new indicator system of new countryside building including 5 first-degree indicators and 27 second-degree indicators. The results showed that the current evaluation index for Gonglian Village is 86.8, which just reached the new countryside building standard. In 1996-2006, the comprehensive evaluation index was increasing gradually, and the standard deviation among 5 evaluation indicators was reducing gradually. It was a healthy development ...