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小麦、玉米两茬平播种植制度已成为京郊最主要的种植形式。如何全面兼顾小麦、玉米两茬,提高全年粮食产量,是目前迫切需要研究的重要课题。两茬间合理的肥料投入是该研究的主要内容之一。已有的报道表明,小麦施磷增产显著,而夏玉米施磷的效果则不明确。
The system of planting sowing wheat and corn in two crops has become the most important planting form in the suburbs of Beijing. How to comprehensively balance the two crops of wheat and corn and increase the grain output for the whole year is an important issue urgently needed to be studied. The rational fertilizer investment between the two crops is one of the main contents of this research. It has been reported that the yield increase of wheat is significant while the effect of phosphorus application on summer maize is not clear.