论文部分内容阅读
徐州市地处淮北,以往夏玉米种植不多,且都用耕翻整平等传统的播种方法。这种精耕细作虽有利于壮苗,但因耗时过多,季节偏晚,常导致芽涝危害。即使无芽涝之年,也因播种过迟,到夏玉米生育后期时气温偏低,不利于籽粒灌浆成熟,造成粒重下降,产量较低。随着农业生产的发展,我市夏玉米面积逐年扩大。1980年只有45万亩,而到
Xuzhou is located in Huaibei, the summer corn planted in the past few, and are tidy and tidy the traditional method of sowing. Although this kind of intensive cultivation is good for strong seedlings, it often causes the damage of buds and floods due to the time-consuming and over-season. Even if there is no sprout flood year, but also due to late sowing, to the late summer maize temperature is low, is not conducive to grain filling mature, resulting in decreased grain weight, lower yield. With the development of agricultural production, summer maize area of our city is expanding year by year. In 1980, only 45 million mu arrived