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1992年我们根据当地自然条件(年有效积温3600～3700℃),做了冬小麦下茬复栽玉米的试验,获得亩产小麦500公斤、亩产玉米585公斤双丰收。主要栽培技术如下:1.前茬冬小麦种前整地做畦,畦宽1.2米,每畦播小麦4幅,于1991年9月25日播种。种子千粒重43克,亩播量为13.5公斤,随播种亩施口肥磷酸二铵15公斤。播后10月2日开始出苗,10月16日进入三叶期。10月22日开始分蘖,冬前亩茎数达97.3万。返青后于小麦拔节期亩追施尿素25公斤,施后结合灌水一次。又于出穗、灌浆期各灌水一
In 1992, according to the local natural conditions (annual effective accumulated temperature 3600 ~ 3700 ℃), we made the test of the winter wheat stubble replanting corn and obtained 500 kg per mu of wheat and 585 kg per mu of corn. The main cultivation techniques are as follows: 1. The former crop winter wheat before the site to do 畦, 畦 width 1.2 meters, each sowing wheat 4, sown on September 25, 1991. Seeds thousand grain weight 43 grams, mu sowing capacity of 13.5 kg, with acres of seed sowing phosphate diammonium 15 kg. After sowing on October 2 began to emerge, October 16 into the clover period. Tillers began October 22, before the winter acres of 97.3 million acres of stems. After returning to green wheat jointing stage acres of chase urea 25 kg, after the combination of irrigation once. Also in a spike, filling a period of irrigation