论文部分内容阅读
干热风是我国北方麦区生产中的一种灾害性天气,危害极大,它波及14省市,经常造成大面积大幅度减产。据河南省有关部门估计,其减产幅度一般达5—10％,重的达20％。也就是说,河南的小麦由于干热风的危害,平均每年损失10—20亿斤。为了有效地与干热风灾害作斗争,各地应用KH_2PO_4、CaCl_2等药物进行了广泛的试验,并取得了一定的成效。在我们
Dry and hot wind is a kind of disastrous weather in the production of wheat in the northern part of our country. It is extremely harmful. It affects 14 provinces and cities and often causes large-scale production cuts. According to the estimation of relevant departments of Henan Province, the rate of decrease is generally 5-10% and the weight is up to 20%. In other words, wheat in Henan due to the dangers of dry and hot wind, the average annual loss of 10-20 billion jin. In order to effectively combat dry-hot-wind disasters, various kinds of drugs such as KH 2 PO 4 and CaCl 2 have been widely used in various fields and have achieved some results. in ours