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一、前言蛋白质饲料缺乏是世界性的问题,冬春青绿饲料缺乏在我国尤为严重,特别是干旱地区。七十年代以来,我国先后从国外引入红三叶、白三叶、聚合草、黑麦草、鸭茅、光叶紫花苕、紫粒苋、串叶松香草、大叶南瓜等饲料优良品种,为解决青绿饲料缺乏问题作了大量工作。但是,除光叶紫花苕外,其余8个品种均在夏秋季生长和利用,冬季枯萎,停止生长,不能利用青草。光叶紫花苕虽属冬春种植利用植物,但它对土壤肥力和水分有一
First, the preface The lack of protein feed is a worldwide problem, lack of winter and spring green feed is particularly serious in our country, especially in arid regions. Since the 1970s, our country has successively imported the fine varieties of red clover, white clover, polymerized grass, ryegrass, sodagrass, violet leaf amaranth, purple amaranth, white leaf pumpkin and big leaf pumpkin for Much work has been done to address the lack of green feed. However, in addition to the light leaves Violet, the remaining eight varieties are in summer and autumn growth and utilization of winter withered, stop growing, can not use grass. Although the light-leaf violet flower winter winter planting plants, but it has a soil fertility and moisture