浙江龙泉县的锦溪、住龙、岩樟、泗源、小梅等公社的科技网,在早稻生产中大力推广球肥深施的同时,和广大贫下中农一起进行水稻根外喷磷试验、示范和推广工作。据10个点的试验对比,喷磷比不喷的每亩增产64斤,最多的每亩增产140斤。龙泉县地处山区,土壤酸性,有效磷含量低,普遍缺磷,特别在磷肥施用量不足的情况下,进行根外琐磷,增产效果显著。根外喷磷,是 Zhejiang Longquan County Jinxi, live in the dragon, camphor, Siyuan, Xiaomei and other communes science and technology network, in the early rice production to promote deep-fertilization of the ball at the same time, with the majority of poor peasants to carry out the root-outside rice phosphorus test, demonstration And promotion work. According to the experimental comparison of 10 points, the yield per mu of phosphorus-spraying is 64 kg and the maximum yield of 140 kg per acre is not increased. Longquan County is located in the mountains, soil acidity, low available phosphorus, the general lack of phosphorus, especially in the case of insufficient phosphorus fertilizer, the external triptolide, yield significantly. Phosphate is the root outside