Techniques of Effective Conservation and Efficient Use Water on Terraced Land in Yan'an City
Techniques of Effective Conservation and Efficient Use Water on Terraced Land in Yan'an City
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发表时间：
2007
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通讯作者：
Gao Wei-heng
中科院分区：
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作者：
Gao Wei-heng
梯田可以通过保持水分为作物生产创造更好的环境。此外，梯田在强风暴中更能抵抗土壤侵蚀，梯田的泥沙比坡地少。在延安，干旱和土壤肥力差是制约旱地作物生产的主要因素。从实用的角度来看，研究水分流失和利用技术是必要的。梯田有限的水资源的管理、需求和更有效的利用受到了高度重视。本文综述了延安梯田水资源有效节约和高效利用的途径。包括保护性耕作、覆膜栽培、限量灌溉、推广节水品种等。土壤肥力的提高应适应延安当地的农业条件。
Terraced land may create a better environment for crop production by moisture conservation.In ad- dition,terraced land is more resistant to soil erosion during intense storm and sediment from terraced land is lower than that from slope land.In yan'an,drought and poor soil fertility are the main restrictive factors for the production of dryland crops.From the practical perspective,research on the techniques of water loss and use is essential.Great attention has been paid to the management,demands,and more efficient use of the limited water resource on terraced land.In this paper,the approaches of effective conservation and efficient use of water on terraced land in Yan'an are reviewed,including conservation tillage,mulch cultivation,limit- ed irrigation,and introduction of water-saving varieties.Soil fertility improvement should be suitable to the local agricultural conditions in Yan'an.