论文部分内容阅读
1991年6月7日,洪洞县甘亭镇杨曲村的700亩河滩地膜棉花遭受了大如鸭蛋、小似核桃的冰雹袭击,持续10多分钟。事后调查,每亩5000侏棉苗,870株有头,2120株光秆,其余均被齐根打断或将整株砸进土中。面对严重灾情,广大棉农奋起抗争,夺得平均亩产皮棉65公斤的好收成。管理措施是:中耕松土争早发雹灾后,棉田表土板结,地温下降,对棉株的恢复生长极为不利。深中耕能破板结,提高地温,增加通透性,增强根系吸收能力,加快破伤愈合和新枝发芽。分别在灾后的第3天和第10天进行了两
June 7, 1991, Hongtong County, Gansu Yangqu Village, 700 acres of floodplain cotton film suffered as much as duck, hail attacked like a walnut, lasted more than 10 minutes. After the investigation, 5,000 musa per acre seedlings, 870 heads, 2120 light culm, the rest were Qigen interrupted or the entire plant smashed into the soil. In the face of a serious disaster, the majority of farmers fought their own way and won a good harvest of 65 kg of lint per mu. Management measures are as follows: Crossover soil sooner or later hailstorm struck, topsoil compaction in cotton fields, ground temperature decreased, the restoration of cotton plant growth is extremely unfavorable. Deep plowing can break the plate knot, raise the ground temperature, increase the permeability, enhance the root absorption capacity, accelerate wound healing and sprout new branches. Two were conducted on the third and tenth days of the disaster respectively