Compensative Effects of Phosphorus Fertilizer to Limited Water Supply in Winter Wheat Plants

doi:10.3321/j.issn:1000-7091.1999.04.015

Abstract

Abstract: The effects of irrigation and phosphorus fertilizer on the water consumption and the yield of winter wheat plants were studied to examine the compensative effects of phosphorus fertilizer to limited water supply.The results showed that the irrigation increased total water consumption of wheat crops,and decreased the soil storage water consumption.The fertilization of phosphorus raised the ability of plants to extract the storage water in lower soil layers,and increased the total water consumption of wheat crops.The irrigation increased the grain yield by raising the ear number per area and the grain weight,and the fertilization increased the yield only by raising the ear number.The irrigation had no effects on harvest index(HI),but decreased the water use efficiency(WUE),while the fertilization did not effect both of the HI and WUE.Above results showed that the phosphorus fertilizer had a certain compensative effects to the soil water deficit coused by limited water supply for winter wheat production.

Key words: Winter wheat, Limited irrigation, Phosphorus fertilizer, Water consumption, Yield

CLC Number:

S512.110.7

LI Jianmin, Lan Xia, Wang Pu, Zhou Dianxi, Zhang Jianhua. Compensative Effects of Phosphorus Fertilizer to Limited Water Supply in Winter Wheat Plants[J]. ACTA AGRICULTURAE BOREALI-SINICA, 1999, 14(4): 78-82. doi: 10.3321/j.issn:1000-7091.1999.04.015.

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