摘要
通过在水土流失严重的山坡耕地上，采取人、机结合修建“改土截流蓄水种植沟”耕作法，辅以作物单作套种，覆盖保墒措施，优良品种配制等一系列技术，从而大幅度提高坡地生产力，使有限降水充分高效利用。在严重春旱气候年份下，取得了较高的产量，保墒率提高１２．５％～１４．７％，雨季蓄墒期土壤水分比传统耕作增加２４．４～３９．４ｍｍ，土壤蓄墒率达到４５，１％～５８．７％，比传统耕作法提高２９．７％～５４．７％。作物增产１２．５倍。
A series of techniques including water storage planting ditches by cuttingoff runoff through soil improvement,(ditches constructed artificially and mechanically incombination), supplemented with measures of single intercropping and mulching to con-serve moisture and matched with fine crop varieties were adopted in the seriously-erodedcultivated slope land thereby to raise the productivity of the cultivated slope land so asto make full use of limited rainfall water. In the case of serious spring dry years,highcrop yields were obtained Moisture conservation rate was raised by 12.5%～14.7%. Soil moisture in moisture storage stage in the rainy season was increased by 24.4～39. 4mm as against the traditional tillage method. Soil moisture storage efficency reached45%～54.7%higher than those of the traditional tillage method. Crop yield increasewas 1～2.5 times as much.
出处
《干旱地区农业研究》
CSCD
北大核心
1995年第4期80-86,共7页
Agricultural Research in the Arid Areas
基金
国家"八五"旱农攻关
关键词
节水耕作
旱作农田
保墒
种植沟
坡地
rainfed farmland
water-saving tillage
moisttire conservation
yield increase
