论文部分内容阅读
小麦生长后期即抽穗成熟期,是形成产量的关键时期,也是高温多雨,病虫、渍害和倒伏、早衰频繁发生的时期。必须尽早动手,切实抓好“四防”,确保丰产丰收。 1 防早衰。小麦抽穗前15天左右,或旗叶露尖至全展期间,对叶色黄绿,有脱肥趋势的麦苗追施孕穗肥,667平方米用尿素3～4千克,促进花粉发育,提高结实率。抽穗灌浆期普施叶面肥,一般667平方米用0.3％磷酸二氢钾溶液70千克,有脱肥趋势的麦田加尿素0.5～1千
The late stage of wheat growth is heading and maturity, is the key to the formation of yield period, but also high temperature and rain, pests, waterlogging and lodging, premature aging occurs frequently. We must start as soon as possible and effectively grasp the “four defenses” to ensure a good harvest. 1 anti-premature aging. Wheat 15 days before heading, or flag leaf tip to the whole exhibition period, the yellow-green leaf color, the trend of malting wheat seedling topdressing booting, 667 square meters with urea 3 to 4 kg, to promote pollen development and enhance the firm rate. Poplar foliar fertilizer during the filling period, generally 667 square meters with 0.3% potassium dihydrogen phosphate solution 70 kg, wheat with the trend of fattening plus urea 0.5 to 1 thousand