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河北省坝上地区气候寒冷,热量不足,多数绿肥作物在当地生长不良或者不能开花结实。我所先后自外地引进十四种绿肥进行鉴定观察,同时在试种绿肥的农牧场及公社生产队进行调查。经过试验调查,能在坝上成熟结籽,而且绿色体产量较高的,有野豌豆,草木樨,紫苜蓿等三种。紫苜蓿目前栽培面积仍然很小,仅有国营牧场和少数生产
Bashang region in Hebei Province, cold weather, lack of heat, the majority of green manure crops in the local poor growth or not flowering. I have imported fourteen kinds of green manure from other places for appraisal and observation. At the same time, we conducted surveys on farms and commune production teams experimenting with green manures. After the test investigation, the mat can mature in the dam, and the higher the yield of green body, there are wild pea, vegetation, purple alfalfa and other three. Current alfalfa cultivation area is still small, only the state ranch and a few production