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磷酸二氢钾(KH_2PO_4)是一种新的二元复合无机化学肥料,它是植物生长发育和生理生化过程中不可缺少的物质。目前,在我省大连地区水稻生产上开始推广,但旱田及棉田极少使用。1980年朝阳县十二台公社腰而营子大队第五、七、九生产队和大队农科站在玉米(籽粒灌浆阶段)、棉花(纤维加厚阶段)和大豆(鼓粒阶段)三种作物上,采取大面积试验和小面积对比,高产田、低产田相结合的方法试用磷酸二氢钾:亩用量0.4斤,兑水150斤,搅匀后于7月下旬～8月上旬在叶表、背面同时喷施。
Potassium dihydrogen phosphate (KH_2PO_4) is a new binary compound inorganic chemical fertilizer, which is an indispensable material in plant growth and development and physiological and biochemical processes. At present, rice production has started to be promoted in the Dalian area of our province, but dry fields and cotton fields are rarely used. In 1980, the fifth, seventh and ninth production teams and the brigade agricultural stations of the waist and Yingzi Brigade of the twelve communes in Chaoyang County were involved in three stages of corn (grain filling stage), cotton (fiber thickening stage) and soybean (drum stage) Crops, to take a large area test and a small area contrast, high-yield fields, low yield field trial of potassium dihydrogen phosphate: mu amount of 0.4 pounds, watered 150 pounds, stir in late July ~ early August in leaves Table, back spray at the same time.