论文部分内容阅读
近年来,京郊海淀区四季青公社通过科学实验,逐年推广先进技术,使葱头单位面积产量有较大幅度的提高,最近4年间平均亩产比前6年增加50％,高产地块达到万斤左右。现将葱头丰产栽培技术措施总结如下: 一、选择品种,适期播种京郊栽培的葱头品种,有紫皮与黄皮两种类型。紫皮品种产量高,但肉质松,含水量大,不耐贮藏,贮藏期间易腐烂、发芽。黄皮品种产量虽比紫皮品种稍低,但肉质致
In recent years, Sijiqing commune in Haidian District, Beijing, has scientifically experimented and popularized advanced technologies year by year so that the output per unit area of onions has been greatly improved. The average yield per mu in the past four years has increased by 50% over the previous 6 years and the high-yield plots have reached 10,000 About jin Now onions high yield cultivation techniques are summarized as follows: First, select the species, sowing onions planted in the suburbs of onions varieties, purple and yellow leather two types. Purple skin varieties of high yield, but succulent, water content, stale storage, perishable during storage, germination. Although the production of yellow croaker varieties slightly lower than purple, but fleshy cause