摘要
Abstract
[Objective]The aim was to establish a suitability evaluation method for new paddy field in'dry land is changed to paddy fields' pro-ject to solve the problem of inadequate paddy fields in the balance process.[Method]GIS spatial analysis technique,analytic hierarchy process and Delphi method were combined;five factors like irrigation guarantee rate,topographic slope,field slope, organic content and field scale were chosen as new water field suitability evaluation factor;a suitability evaluation method for new paddy field in'dry land is changed to paddy fields' project of Guangdong Province was established;the suitability evaluation of new paddy field was carried out for dry land,adjustable land,unused land and existing supplementary cultivated land.[Result]The suitability of new paddy field of studied area was divided into four grades,that is the most suitable,suitable,barely suitable and unsuitable,whose areas were 366 142,419 483,497 581 and 179 800 hm2,respectively,which ac-counted for 25.03 %,28.67 %,34.01%and 12.29%of total studied area.The evaluation result was more consistent with practical condition,so it was suggested that the suitability evaluation method was precise,simple and suitable for Guangdong Province.[Conclusion]The evaluation result provides reference for Guangdong Province to carry out 'dry land is changed to paddy fields' project.关键词
新增水田/适宜性评价/"旱改水"项目/耕地后备资源/水田Key words
New paddy field/Suitability evaluation/'Dry land is changed to paddy fields'project/Cultivated reserve resources/Paddy fields分类
农业科技
