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紫花苜蓿不仅是重要牧草,也是我国北方主要的绿肥作物。种植苜蓿,对于培肥土壤,保持水土,繁荣畜牧业,维特生态平衡,都有着十分积极的意义。我省紫花苜蓿栽培面积居全国前几位。在“种草种树,发展畜牧,改造山河,治穷致富”的号召下,预计今后几年的种植面积会有较大的增长。因此,我们更应推广栽培技术,提高管理水平。据笔者在庆阳地区调查,发现目前紫花苜蓿产草量不高,品质低劣,产量悬殊且不稳定;苜蓿地倒茬周期偏长,有些地块连续种植达十年之久还未开挖,本已培肥的地块却未倒茬种植;开挖方法不当,整片翻挖,造成严重的水土流失。
Alfalfa is not only an important pasture, but also a major green manure crop in northern China. Planting alfalfa has very positive significance for fertilizing soil, maintaining soil and water, prospering livestock husbandry, and viter ecological balance. Alfalfa cultivation area in our province ranks first in the country. Under the call of “planting trees and grass, developing livestock husbandry, rebuilding mountains and rivers and treating poverty and becoming rich”, the planted area is expected to increase greatly in the next few years. Therefore, we should promote cultivation techniques and improve the management level. According to the author in Qingyang area survey, found that the current alfalfa grass production is not high, poor quality, poor yield and instability; alfalfa stubble cycle longer, some plots of continuous cultivation for ten years has not yet been excavation, the The plots that have been fertilized have not been planted and planted; the improper excavation method has resulted in the digging of the whole piece, resulting in serious soil and water loss.