| 塿土旱作区施肥对小麦产量和水分利用效率的影响 |
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| 引用本文： | 戴万宏,吕殿青.塿土旱作区施肥对小麦产量和水分利用效率的影响[J].西北农林科技大学学报(社会科学版),1993(Z1). |
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| 作者姓名： | 戴万宏 吕殿青 |
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| 作者单位： | 陕西省土壤肥料研究所，陕西省土壤肥料研究所 陕西杨陵 712100，陕西杨陵 712100 |
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| 基金项目： | 国家攻关项目“85-07-01-01”专题的一部分 |
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| 摘 要： | 研究了黄土高原南部塿土旱作区施肥对小麦产量和水分利用效率的影响。结量表明,合理增施肥料能显著提高冬小麦产量和水分利用效率,最高施肥量分别提高了1611kg/hm~2和0.235kg/mm水分。施肥量增加使小麦叶片水势有所降低,0～200cm土层贮水量呈发育前期升高而后期下降的趋势,改善了小麦植株自身调节和保持水分的能力,提高了产量和水分利用效率。
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| 关 键 词： | 塿土 旱作 施肥 冬小麦 水分利用效率 |
Effect of Fertilizer Supply on Grain Yield and Water Use Efficiency of Winter Wheat on Lou Soil Dryland |
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| Dai Wanhong Lu Dianqing.Effect of Fertilizer Supply on Grain Yield and Water Use Efficiency of Winter Wheat on Lou Soil Dryland[J].Journal of Northwest Sci-Tech Univ of Agr and,1993(Z1). |
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| Authors: | Dai Wanhong Lu Dianqing |
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| Abstract: | This paper deals with the effect of fertilizer supply on grain yield and water use efficiency(WUE)of winter wheat on Lou soil dryland in the south part of the Loess Plateau. The results showed that rational fertilzer supply, increased prominently gnin yield and WUE of winter wheat. Maximum fertilizer supply increased grain yield by (611 kg/hm2 and WUE by 0. 235 kg grain/mm water. With an increase in fertilizer supplies,water potential of wheat leaf decreased,and water conserved in 0~200 cm soil horizon increased in the early stage of wheat growth and decreased in the late stage. The ability of water regulation and preservation of plant were improved. Accordingly,grain yield and WUE of winter wheat were also improved. |
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| Keywords: | Lou soil dryland agriculture fertilizer supply winter wheat water use efficiency |
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