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发展绿肥是培肥土壤的重要途径。在渭北旱原绿肥如何发展?通过近几年的实践看出,必须改变以前的习惯作法实行“两改”:即改绿肥间作套种和闲地插种为计划种植,实行轮作倒茬;改绿肥只作肥不作草的利用方式为割草喂畜,用根和畜粪肥田。这样做有以下好处: 一、产草量高绿肥的产草量是肥田喂畜的基础。渭北降雨量少,冬前和夏闲适宜于绿肥生长的时间一般只有50—60天,产草量低而不稳。如1979—1981年,在白水、蒲城、合阳三县的20块毛苕试验示范田调
The development of green manure is an important way to fertilize the soil. How to develop green manure in Weibei drylands? Through the practice in recent years, it is necessary to change the previous practice of “two changes”: intercropping with green manures and interplanting of idle land for plan planting, crop rotation and crop rotation; Only for the use of fertilizer and grass for the lawn mowing, with roots and livestock manure fields. This has the following benefits: First, the high yield of green manure is the basis for fattening livestock. Weibei less rainfall, pre-winter and summer green fertilizer suitable for the growth of the time is generally only 50-60 days, grass production is low and unstable. Such as 1979-1981, in Baishui, Pucheng, Heyang three counties 20 Mulan test demonstration field transfer