土地资源紧缺已成为人口密集地区的严峻问题,因而要发展较大面积专用草地是不现实的,这个问题在渭北旱原小麦主产区普遍存在.小麦播种面积占耕地面积40％～60％,麦收后大多短期休闲后复种小麦,这段时间有较好的光、热、水条件,如能利用部分夏闲地填闲种草,则可解决或缓解牲畜青绿饲料缺乏问题。 The shortage of land resources has become a serious problem in densely populated areas, so it is unrealistic to develop a large area of ​​grassland for special purposes, which is common in the main wheat producing areas of Weibei drylands. The sown area of ​​wheat accounts for 40% -60% After the wheat harvest, most of the short-term post-harvest wheat replanting will have better light, heat and water conditions during this period. If some of the summer fallow land can be reclaimed, the shortage of livestock green feed can be solved or alleviated.