Effects of Coupling Water with N Fertilizers on Spatio-temporal Distributing of Soil Moisture and Water Using Efficiency in Tobacco Fields |
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| Authors: | Ren Y Wang Yaofu Liu Zhanqing Li Zhmin |
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| Institution: | (1National Research Center for Tobacco Cultivation and Physiology and Biochemistry, Henan Agricultural University, Zhengzhou, 450002; 2Tobacco Company of Yichuan County Yichuan,471300; 3College of Agriculture, Henan Agricultural University, 45002) |
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| Abstract: | The interaction effects of water and nitrogen on soil water distribution and water use efficiency of tobacco fields were studied by splitting plot design experiment. The results showed that with the increase of nitrogen within the range of nitrogen 0-45.0kg/hm2, the moisture content in soil body and the efficiency of water production value all increased, but decreased when the amount of nitrogen 67.5kg/hm2 were applied .The effects of water and N fertilizers has a rational range, the higher water efficiency and productivity were obtained under the range of nitrogen 45.0-67.5kg/hm2 and irrigation 225.0-450.0m3/hm2 W1N2 treatments was proposed considering both the cost input and the water production efficiency. |
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| Keywords: | Tobacco Coupling water with N fertilizers Soil water Water using efficiency |
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