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顺义县地处北京市远郊,全年总积温在4450℃左右,适合搞小麦,玉米间作套种及一年两茬平作。采用两茬平播不仅能提高土地利用率,而且还可提高复种指数和两茬作物的总产量。但是,两茬平播受到我县有效积温的限制,又存在下述两个问题:一是不等玉米充分成熟就得收获,以便播种适时麦;二是等玉米成熟后再收获,因剩下的播种时间短,又不能大面积种上适时麦。为此,我县试验了晚播麦地膜覆盖法。通过几
Shunyi County is located in the outer suburbs of Beijing, the total accumulated temperature throughout the year at about 4450 ℃, suitable for engaging in wheat, intercropping intercropping corn and two cropping for one year. The use of two cropping broadcasts will not only increase land use efficiency, but will also increase the crop yield and crop yield. However, the two crop plain broadcast by my county effective accumulated temperature restrictions, there are two problems as follows: First, ranging from corn mature enough to be harvested in order to sow the timely wheat; second is the other corn mature and then harvest, because the rest The sowing time is short, but also can not be timely planting a large area of wheat. To this end, my county tested the late broadcast of wheat film cover method. Through a few