Restoration technologies of damaged paddy in hilly post-mining and subsidence-stable area of Southwest China  

作　　者：Zhong Shouqin Wei Chaofu Liu Bo Zhang Weihua Du Jing Zhang Shichao 

机构地区：[1]Key Laboratory of Arable Land Conservation(Southwest China),Ministry of Agriculture,Chongqing 400715,China [2]College of Resources and Environment,Southwest University,Chongqing 400715,China

出　　处：《International Journal of Agricultural and Biological Engineering》2015年第2期46-57,共12页国际农业与生物工程学报（英文）

基　　金：supported by National Key Technology R&D Program of China-“The Key Technology and Demonstration of Rural Land Transfer and Resource Integration(2013BAJ11B02)”;Scientific Research Innovation Project of Chongqing for Graduate(CYB14055).

摘　　要：The paddy fields and water storage facilities are seriously damaged by the coal mine subsiding in the hilly post-mining and subsidence-stable areas in China,which make the farmers there being suffered greatly from the lack of water for traditional rice cultivation and daily life.The purpose of this paper is to find a method to restore the damaged paddy fields,thereby promoting sustainable development of land resources,and alleviating the contradiction between people and land,as well as creating a more inhabitable environment.The research methodology included field experiments,cultivated observation,and field investigation.This paper selected the Songzao Mining Area as the research area,and focused on the restoration technologies of damaged paddy fields,through the following four different measures at three experimental fields:(1)Traditional repeated cattle plowing(CK);(2)Water retention agent with repeated cattle plowing(W&C);(3)Film without holes under tilth depth(FO);and(4)Film with holes under tilth depth(FW).At last,a contrastive analysis of the four measures was made according to the results of the experiments.The results show that the use of water retaining agent with repeated cattle plowing(W&C)can be the most appropriate method to restore the damaged paddy field in the hilly post-mining and subsidence-stable area in southwest China.Compared with the other three measures,its water productivity is the maximum(0.81 kg/m3),and the net income is the highest(1403$/hm^(2)).What’s more,it is simple,short time-consuming,and low cost,which is benefit to generalize the use of this restoration technology.

关 键 词：land restoration damaged paddy field post-mining and subsidence-stable area water consumption hilly areas 

分 类 号：S15[农业科学—土壤学]