论文部分内容阅读
哈尔滨市呼兰区位于黑龙江省南部,属于我国北方高寒地区,全年降水量较少,只维持在500mm左右,而且无霜期较短,仅为140d左右。玉米是我区的主栽粮食作物,年播种面积15万hm2左右,占总耕地面积的70%以上。与我国南方地区相比,我区玉米全年仅为一季生产,而且经常遭遇十年九春旱的不利气候条件,尤其是在春季播种期间,干旱对玉米生长的影响更为严重。为了探索有效的综合性抗旱减灾的栽培技术措施,提高玉米抗旱能力,从而提高单产,我们进行了玉米不同栽培方法对抗旱能力影响的试验研究,为玉米生产提供科学依据。
Hulan District of Harbin City is located in the southern part of Heilongjiang Province. It belongs to the alpine region of northern China. The precipitation in the whole year is relatively small, only about 500mm, and the frost-free period is short, only about 140 days. Maize is the main grain crops in our district. The annual sown area is about 150,000 hm2, accounting for over 70% of the total cultivated land area. Compared with the southern part of our country, corn in our district is only produced in one season throughout the year, and it is often subjected to unfavorable climatic conditions of drought in the spring of 1998. Especially during the spring planting season, the impact of drought on the growth of maize is more serious. In order to explore effective cultivation techniques and measures for drought and disaster mitigation and to improve drought tolerance of maize and improve yield, we conducted experimental studies on the effects of different cultivation methods of maize on drought resistance and provided scientific basis for maize production.