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关中为一年两熟地区,而棉田多为一年一熟,为了更好地提高棉田利用率,群众在发展棉花生产的同时,因地制宜地创造了棉油两熟和棉田套种,增加了土地经济收入。一、油棉两熟近年来,随着品种及栽培措施的发展,以回茬直播油菜与夏播棉花品种配套,取得油棉双丰收。 1.适应地区及倒茬方式关中东部灌区日照充足,气温高,光热资源较丰富,适宜于回茬直播油菜和油棉两熟的发展。1979年开始推广回茬直播油菜,1982年渭南县种植面积达3万亩。油菜后种植的是中棉10号等夏播棉花品种,棉田变为一年两熟。油棉两熟栽培中油菜的高产、早熟是个关键。省粮作所耕改课题组,通过几年的研究,以小麦套种中早熟玉米,玉米收
Guanzhong two areas a year, while the cotton fields are mostly cooked in one year, in order to better improve the utilization of cotton, the masses in the development of cotton production, while creating cotton-oil two crops and cotton intercropping in accordance with local conditions, an increase of land economy income. In recent years, with the development of cultivars and cultivation measures, the co-cultivation of rapeseed and summer sowing cotton varieties by direct stubble harvesting has achieved double harvest of oil and cotton. 1. Adaptation to regional and inverted cropping Guanzhong eastern irrigated area sufficient sunshine, high temperature, light and heat more abundant resources, suitable for stubble direct seeding rape and cotton double development. In 1979 began to promote stubble broadcast live rapeseed, Weinan County in 1982 planted area of 30000 acres. Rape is planted in the cotton and other summer sowing cotton varieties, cotton fields into two crops a year. Oil-cotton two-crop cultivation of rapeseed yield, precocious is a key. Provincial grain farming by farming research group, through several years of research, wheat interplanting in early maturing corn, corn harvest