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近年来,我区由于耕作制的改革,作物布局起了变化,小麦面积有了扩大,复种指数有所增加,促进了农业生产的发展,也带来了新的课题。如抓单位面积高产、扩大粮食作物时,做好用地养地结合;既要注重一季增产,又要全年均衡增产;广开肥源,消灭白籽下种;降低生产成本,提高经济收益等。耕作制形式多样,主要应解决土壤肥力问题,即处理好用地、养地的矛盾。为此,我们于1973-74年在复种指数高的水田作了小麦间作绿肥试验,以探索水田用地养地的途径。一、试验内容和方法:试验在本所农场稻茬田进行,面积1.4亩。小麦间作绿肥比例7:3,即1亩种7分小麦、3分绿肥。具体做法是条带种植,分两种:一种是7尺宽带,条播小麦7行(南充矮2号,播幅6寸,行距4寸,下同),3尺窄带撒播关中毛
In recent years, due to the reform of farming system in our district, the layout of crops has changed. The area of wheat has been expanded, and the index of multiplication has increased, which has promoted the development of agricultural production and brought new topics. Such as grasping unit area of high yield, expand food crops, do a good job with the combination of land; not only pay attention to the first quarter of production, but also a balanced increase in production throughout the year; wide open source of fertilizers to eliminate white seed under; reduce production costs and increase economic benefits Wait. Tillage system in various forms, mainly to solve the problem of soil fertility, that is, deal with land, raise contradictions. To this end, we conducted inter-crop green manure experiments in paddy crop with high MUF in 1973-74 to explore ways to maintain paddy fields. First, the test content and methods: The test ran in our farm rice field, an area of 1.4 acres. Wheat intercropping green manure ratio 7: 3, that is, 1 acre of 7 points of wheat, 3 green manure. The specific approach is to strip cultivation, divided into two kinds: one is 7 feet wide band, 7 rows of wheat (Nanchong dwarf 2, sowing 6 inches, row spacing 4 inches, the same below), 3 feet narrow band broadcast Guanzhong