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当前位置: 首页 > 文章 > 氮钾肥在水稻中的积累规律及其合理施用研究 江西农业学报 2015,v.27 (4) 28-32
Position: Home > Articles > Studies on Accumulation of Nitrogen and Potassium Fertilizer in Rice Plants and Their Reasonable Application Rates Acta Agriculturae Jiangxi 2015,v.27 (4) 28-32

氮钾肥在水稻中的积累规律及其合理施用研究

作  者：
王惠珠
单  位：
福建省龙海市土壤肥料站
关键词：
水稻;氮肥;钾肥;吸收积累特性;合理施用
摘  要：
通过设置氮、钾肥施用量试验,研究了氮钾肥在水稻中的积累规律及其合理施用。结果表明:(1)水稻对氮、钾养分的吸收积累动态呈Logistic曲线,氮素以本田前期吸收最多,中期次之,后期很少;钾素以在本田中期吸收最多,前期次之,后期也很少;(2)水稻对氮、钾养分的积累量(y)随施肥量(x)的平方根值(槡x)的增加而增加,但当季利用率降低;(3)稻谷产量与氮、钾肥施用量呈抛物线型相关;(4)水稻对氮素更敏感,而较耐低钾和高钾,在本试验条件下,经济施氮量为150kg/hm2,经济施钾量为130kg/hm2,相当于每生产100kg稻谷施氮1.44kg、施钾1.25kg。
译  名：
Studies on Accumulation of Nitrogen and Potassium Fertilizer in Rice Plants and Their Reasonable Application Rates
作  者：
WANG Hui-zhu;Soil and Fertilizer Station of Longhai City in Fujian Province;
关键词：
Rice;;Nitrogen fertilizer;;Potassium fertilizer;;Absorption and accumulation characteristics;;Reasonable application rate
摘  要：
Through setting field fertilization test,the author studied the accumulation rule of nitrogen(N) and potassium(K)fertilizer in rice plants and their reasonable application rates in rice production.The results showed that the dynamics of both N and K nutrient accumulation in rice plants exhibited a Logistic curve.N accumulation amount in rice plants was the most at earlier stage(from transplanting to bud differentiation),the second most at middle stage(from bud differentiation to full heading),and the least at later stage(from full heading to maturing).However,K accumulation amount in rice plants was the most at middle stage,the second most at earlier stage,and the least at later stage.N and K accumulation amount(y) in rice plants increased with the increase in the square root of N and K application rate(x),but their utilization rate in the tested season reduced.The ricegrain yield had a parabolic relationship with the application rate of N and K fertilizer.Rice plants were more sensitive to N,and were more tolerant to low-level K or high-level K.Under the conditions of this test,the economic application rates of N and K were 150kg/hm2 and 130kg/hm2,respectively,being equivalent to 1.44kg N and 1.25kg K application for the production of 100kg ricegrain.

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