论文部分内容阅读
1983年全国北方旱地农业工作会议以来,我省在认真总结落实传统的旱作农业技术的同时,大力研究推广新技术,为农业发展起了很大作用。“旱农”新技术主要有: ①地膜覆盖。1988年全省地膜覆盖栽培面积达91.7万亩,已在小麦、玉米、棉花、花生和瓜菜等多种作物上应用,均表现出增产作用。特别是在无霜期较短、春旱严重的北部增产更为显著。1987年承德地区在干旱丘陵土地上推广地膜玉米3.5万亩,平均亩产755.5公斤,增产414.4公斤,有132.3亩产过吨,最高达1134.2公斤,创全省玉米单产的历史最高水平。②夏播小麦。我省冀西北坝下丘陵地区,海拔高、温度低,平均降水400毫米,7月降雨最多。
Since the 1983 conference on dry farming in northern China, the province has seriously studied and popularized new technologies while earnestly summarizing and implementing traditional agricultural technologies for dry farming, and played a significant role in agricultural development. “Dry farming” new technologies are: ① mulching. In 1988, the province’s membrane mulching cultivation area reached 917,000 mu and it has been applied to many crops such as wheat, corn, cotton, peanut and melon and all showed an increase in yield. Especially in the frost-free period is shorter, more severe northern spring drought more significant. In 1987, Chengde Prefecture promoted 35,000 mu of plastic mulch on arid and hilly land, with an average yield of 755.5 kilograms per mu and an increase of 414.4 kilograms. There were 132.3 mu of tons produced and the highest reached 1134.2 kilograms, the highest level in the whole province. ② summer sowing wheat. Hebei Province, northwestern Hebei dam hilly areas, high altitude, low temperature, the average rainfall of 400 mm, July rainfall.