论文部分内容阅读
洋葱(Alii mcepaL.)又叫葱头,维语叫皮牙子,耐贮存,耐运输,是群众喜欢的蔬菜之一。哈密盛产洋葱,亩产3—8.5吨,亩产值450—1215元。洋葱畅销于内地各省(市),加工脱水后,远销西欧各国、日本和香港等地,换取外汇,支援四化建设;是哈密菜农翻番致富的拳头产品。但由于一年生和多年生的单、双子叶杂草密度大(每平方米达319—4007株),发生普遍,危害严重,如不及时拔除杂草,可使洋葱草荒无收。但拔除杂草据测定:一亩洋葱田,需人工44.4—66.7个,且劳动强度大、时间长、影响产量。所以哈密洋葱面积一直不能扩大,而徘徊在8000亩以下。为解决这一难题,1985年—1986年,哈管局试验研究成了洋葱田化学除草,并在大面积上进行推广,防除效果和经
Onion (Alii mcepaL.) Also known as onion, Uygur language called Piyazi, resistant to storage, transport resistance, is one of the favorite vegetables. Hami rich onion, 3-8.5 tons per mu, 450-1215 yuan per mu output value. Onions are popular in the provinces (cities) of the Mainland, processed and dehydrated, exported to Western European countries, Japan and Hong Kong for foreign exchange and support the four modernizations; However, due to annual and perennial single, dicotyledonous weeds density (up to 319-4007 per square meter), the occurrence of widespread, serious harm, if not promptly remove the weeds, onion grass irresolute. However, weeds were removed according to the determination: an acre of onion field, artificial 44.4-66.7 months to be required, and labor-intensive, long time, affecting production. So Hami onion area has been unable to expand, while hovering below 8000 acres. In order to solve this problem, from 1986 to 1986, the Ha-Ha-Ban experimental study became a weed-killer in the onion field and was popularized on a large scale to control its effects.