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玉米是高产作物,近几年夏播区玉米主导品种有郑单958、浚单20等,两三个主导品种占播种面积的85%以上,造成遗传比较单一的现象,如果玉米病害生理小种变异会造成病害的加重发生,严重影响玉米生产的安全,为此我们进行了夏玉米不同品种的间作技术的试验示范。结果表明:夏玉米不同品种的间作与单一种植一个品种相比不但提高了玉米的综合抗性,而且产量还提高了10—15%。一、玉米不同品种间作的依据通过玉米不同品种间作,一是利用不同品种
Maize is a high-yielding crop. In recent years, the main maize varieties in summer sowing area are Zhengdan 958 and Xundan 20, and the two or three dominant cultivars account for more than 85% of the sown area, resulting in a relatively single genetic phenomenon. If maize disease physiological races Variation will cause the disease to aggravate, seriously affecting the safety of corn production, for which we conducted a pilot demonstration of different varieties of summer maize technology. The results showed that the intercropping with different varieties of summer maize not only improved the comprehensive resistance of maize, but also increased the yield by 10-15% compared with the single planting. First, the basis for different varieties of maize intercropping through different varieties of corn, one is the use of different varieties