论文部分内容阅读
西部山区是我市玉米主产区之一。杂交玉米一般在海拔1200米以下地区种植。近年来,由于大面积推广玉米地膜覆盖,杂交种可在海拔1500米左右地区种植能安全成熟。目前,西部山区种植地膜玉米212485亩,占宜膜面积的85％左右。在整个玉米生产中,引进适宜的杂交种在生产上发挥了一定的经济效益。深感在自制种不能满足的情况下,引种是获得优良品种的重要途径,在此项工作中,我们初步找出了一些规律。
Western Mountain is one of the main producing areas of corn in our city. Hybrid corn is generally planted below 1200 meters above sea level. In recent years, due to large-scale popularization of maize mulching, hybrids can be planted in the area around 1,500 meters above sea level can be safe and mature. At present, 212485 mu of plastic mulch is planted in western mountainous areas, accounting for about 85% of the area of the mulch. In the whole corn production, the introduction of the appropriate hybrids in the production has played a certain economic benefits. Deeply felt that in the case of self-made species can not be satisfied, the introduction is an important way to obtain good varieties, in this work, we initially found some laws.