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1999— 2 0 0 0年 ,作者于昆山市共青丰产方组织水稻全程氮肥持续高效施肥技术研究及其优质、高产定量施肥技术示范 ,以水稻目标产量为依据 ,根据土壤养分供应的平衡与非平衡状况 ,测算出土壤养分供应强度和比例 ,按需确定适宜施肥量 ,确保获得理想产量和优良品质。结果表明 ,在应用品种为早熟晚粳 ,目标产量 70 0kg/ 6 6 7m2 ,基础产量 4 80kg/ 6 6 7m2 的条件下 ,适宜的施肥量为N 15～ 16kg/ 6 6 7m2 ,P2 O510kg/ 6 6 7m2 左右 ,K2 O 10kg/ 6 6 7m2 以上 ,并掌握氮肥重点作基肥和拔节穗肥使用 ,磷钾肥作基肥使用
From 1999 to 2000, the author studied the continuous and efficient fertilization technology of nitrogenous fertilizer in rice and the demonstration of high-yield and quantitative fertilization techniques in Gongqingfeng Recipe of Kunshan. Based on the target output of rice and according to the balance of soil nutrient supply and non- Balance the situation, calculate the supply of soil nutrient intensity and proportion, according to need to determine the appropriate amount of fertilizer to ensure that the ideal yield and good quality. The results showed that under the conditions of early ripening japonica rice, the target yield was 70 0kg / 667m2 and the basic yield was 4880kg / 667m2, the suitable fertilization amount was N 15 ~ 16kg / 6 6m2, P2 O5 10kg / 6 6 7m2 or so, K2 O 10kg / 6 6 7m2 above, and master the focus of nitrogen fertilizer for basal and jointing spike, phosphorus and potassium fertilizer for basal use