辽西半干旱区农田水肥耦合作用对春小麦产量的影响

应用生态学报 ›› 2000, Vol. ›› Issue (4): 535-539.

辽西半干旱区农田水肥耦合作用对春小麦产量的影响

李法云¹, 宋丽¹, 官春云², 葛旦之², 刘作新³

1. 辽宁大学环境与生命科学学院, 沈阳110036;
2. 湖南农业大学, 长沙410128;
3. 中国科学院沈阳应用生态研究所, 沈阳110015

收稿日期:1999-09-14 修回日期:2000-03-13 出版日期:2000-07-25
通讯作者: 李法云,男,1970年生,博士后,副教授.主要从事污染生态化学与农业资源高效利用方面的研究,发表论文30篇.
基金资助:
国家“九五”重点科技攻关项目(96-004-04-10-02);辽宁省教委资助项目(9901213699)

Coupling effect of water and fertilizers on spring wheat yield in semi-arid area of western Liaoning Province

LI Fayun¹, SONG Li¹, GUAN Chuyun², GE Danzhi², LIU Zuoxin³

1. College of Environmental and Life Sciences, Liaoning University, Shenyang 110036;
2. Hunan Agricultural University, Changsha 410128;
3. Institute of Applied Ecology, Chinese A cademy of Sciences, Shenyang 110015

Received:1999-09-14 Revised:2000-03-13 Online:2000-07-25

摘要/Abstract

摘要： 最优饱和设计试验建立的春小麦产量回归数学模型表明,水分是影响辽西半干旱区春小麦产量最为重要的因子,但在自然降水条件下,灌水量上、下限分别为45mm和360mm时,N对春小麦产量影响更为敏感,其次为水与P因子,三因子对小麦产量影响统计分析达显著水平,并且其对小麦产量的影响符合报酬递减率.获得最大利润时N、P和水三因素最佳经济配比模式为施N量186kg·hm^-2,施P量63kg·hm^-2,灌水量300mm,在缺水条件下适量增施P肥有利于增强春小麦的抗旱作用.

Abstract: With optimum saturation design,a field experiment was conducted to study the coupling effect of water and fertilizers on spring wheat yield in semiarid area of western Liaoning Province.Regression model shows that water was the most important factor affecting spring wheat yield.Under natural raining and when the upper and the lower limit of irrigation was 360 mm and 45mm,respectively,N was the most sensitive factor,water was the second, and P was the third. The effects of N,P and water on yield were statistically significant,and met the law of diminishing return.The most economic matching pattern of N,P and water was N 186kg穐m^-2,P 63kg穐m^-2,and water 300mm.Properly increasing phosphorus fertilizer at the lack of water could strengthen the drought resistance of spring wheat.

李法云, 宋丽, 官春云, 葛旦之, 刘作新. 辽西半干旱区农田水肥耦合作用对春小麦产量的影响[J]. 应用生态学报, 2000, (4): 535-539.

LI Fayun, SONG Li, GUAN Chuyun, GE Danzhi, LIU Zuoxin. Coupling effect of water and fertilizers on spring wheat yield in semi-arid area of western Liaoning Province[J]. Chinese Journal of Applied Ecology, 2000, (4): 535-539.

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