综合一区欧美国产,99国产麻豆免费精品,九九精品黄色录像,亚洲激情青青草,久久亚洲熟妇熟,中文字幕av在线播放,国产一区二区卡,九九久久国产精品,久久精品视频免费

We have launched E-mail Alert service,subscribers can receive the latest catalogues free of charge

 
 
You Are Here: Home > Reports

Urgent Need to Improve Utilization of Agricultural Water Resources in Main Grain Producing Areas(No. 36, 2016)

2016-05-13

By Liu Yan, Information Center, Cheng Yu, Research Department of Rural Economy, DRC

Research Report No 36, 2016 (Total NO 4919) 2016-3-28

Abstract: With a strategic position for China's agricultural production and national food security, major grain producing areas contributed 75% of the national grain output and 90% of the increase in grain production (except 2007 and 2009). However, the constraints of water resources in major grain producing areas have become increasingly grim. On one hand, food production is facing water resource constraints due to limited per capita water resources and asymmetrical balance between soil and water resources. On the other hand, the level of water resource development and utilization of grain production is not high. The extensive irrigation method has led to serious waste of water, and the serious degrading of irrigation facilities has resulted in backward mechanism. Therefore, it is an urgent need to improve the utilization of agricultural water resources in major grain producing areas. It is recommended that we should establish an overall control on agricultural irrigation water amount as well as a quota management system. We should make coordinated efforts to strengthen infrastructure construction of farmland irrigation, and introduce and innovate high efficiency and water saving irrigation engineering. In addition, we should establish an integrated protection system of farmland, water, irrigation and drainage, and further improve the farmland water conservancy management system.

Key words: agricultural water resources, utilization, major grain producing areas

 
渑池县| 宁武县| 交城县| 五河县| 太康县| 佛冈县| 泾源县| 富源县| 信宜市| 海盐县| 南康市| 木兰县| 公安县| 乐昌市| 丰宁| 平顶山市| 锦州市| 沙坪坝区| 安康市| 南投市| 永仁县| 松阳县| 如皋市| 满城县| 天水市| 张家界市| 静乐县| 宁化县| 庆安县| 建阳市| 南江县| 合阳县| 莱州市| 台湾省| 军事| 巫溪县| 长沙县| 澳门| 安陆市| 喀喇沁旗| 上栗县|