摘要
针对陕北地区,考虑土壤基本属性、改土培肥、自然及粮食产量等因素,选取了19个综合评价指标,把陕北中低产田划分为八大主要障碍类型,即:坡耕地水土流失瘠薄障碍型;旱平地干旱缺肥障碍型;水地营养不足障碍型;灌区缺水障碍型;水害障碍型;土壤质地障碍型;坡地风蚀沙化水土流失瘠薄障碍型;滩旱地风蚀沙化干旱障碍型。依据因地制宜、分类治理的原则,提出了不同类型开发治理的模式和主要途径;测算陕北粮食总增产潜力为23亿kg。估算了初步开发治理中低产田的效益为138kg/100元。
Yaking many factors such as basic soil properties,soil improvement and enrich-ment,natural conditions and grain output into account in North Shaanxi,19 comprehen-sive evaluation indexes are selected to classify the medium and Low-yiedling fields inNorth Shaanxi into 8 important types with some barriers,i.e.the type of poor slope landwith water and soil erosion,the type of irrigated area lack of water resources;the type offlood disasters,the type of soil textures,and the type of drought in wind erosion and de- sertification on the dry bank land,etc.Based on the principle of being suitable to localconditions and controlling by types,the important models and approaches of develop-ment and controlling of various types were suggested.Total yield increasing potentialscalculated in North Shaanxi is 2.3 billion kg,and also,per mu yield increasing potentialof various kinds is also estimated.The effects of developing and controlling the mediumand low yield farmland to be preliminarily estimated are 138kg/yuan.
出处
《干旱地区农业研究》
CSCD
北大核心
1992年第4期15-22,共8页
Agricultural Research in the Arid Areas
关键词
中低产田
障碍类型
治理
陕北地区
the medium and low yiedling farmland
the barrer types
development and controlling
north Shaanxi area
