摘要
以《全国耕地类型区、耕地地力等级划分标准》、《广西中低产田调查与指标评价(耕地质量建设)实施方案》为依据,对柳州市耕地地力等级及中低产田(地)指标进行综合评价分析。结果表明,柳州市耕地地力分为9个等级,以3～9级为主,其中1、2等耕地占全市总耕地面积的3.83%,是柳州市粮食及蔬菜的重要产区;3～9等耕地占全市总耕地面积的96.17%,是柳州市粮食、甘蔗、桑蚕、水果等作物主要产区,也是中低产田(地)主要分布区。针对柳州市中低产田(地)形成的主要原因,提出实施耕地质量保护工程、严格耕地质量监测和管理制度、大力推广耕地质量提升关键技术等改良建议,以提高作物产量和品质,促进农业生产可持续发展。
The classification of cultivated land＇s fertility and indices of medium-low yield cropland were evaluated according to the Classification of Type Regions and Fertility of Cultivated Land in China, and Implementation Plan for In- vestigation and Index Evaluation of Medium-Low Yield Field in Guangxi. The relative information from previous soil investigation results, Classification Key of Soil in Guangxi （1981）, Soil of Liuzhou, Guangxi （1998）, crop yield per unit area, utilization status of cultivated land, reformation of low productivity paddy soil （1991）, irrigation and soil water holding capacities, etc., were collected and cultivated land area, planting land area, reformation technology for medium-low yield cropland, nutrient status of medium-low yield cropland, etc., in 6 counties and 4 districts were investigated. On the basis of results, cultivated land in Liuzhou City was classified into nine grades. The grades from 3-9 accounted for the largest cultivated land area. The first and the second ones accounted for 3.83% of total areas, which were the main areas for growing grains and vegetable, with high and stable yield. The land with 3-8th grades accounted for 96.17%, which were the main areas for grain, sugarcane, silkworm and fruit production, and they were also the main regions of medium-low yield cropland. Aiming at the cause of medium-low yield cropland, some reformation suggestions have been put forward, viz., implementation of project for protecting cultivated land quality, strictly performing monitoring and management system for cultivated land quality and extension of key technologies for improving cultivated land quality, in order to raise the yield and quality of crops and promote the sustainable development of agricultural production.
出处
《广西农业科学》
CSCD
2010年第12期1317-1320,共4页
Guangxi Agricultural Sciences
基金
柳州市科学研究与技术开发计划项目(2008030801)
关键词
耕地
地力
评价
中低产田(地)
广西柳州
cultivated land
fertility
evaluation
medium-low yield cropland
Liuzhou City of Guangxi
