[1]WU Bing,GAO Yuhong,GAO Zhenni,et al.Effects of Fertilization on Water Consumption Characteristic and Grain Yield of Linum usitatissimum L. in Dry Land[J].Research of Soil and Water Conservation,2017,24(03):188-193.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
24
Number of periods:
2017 03
Page number:
188-193
Column:
Public date:
2017-06-28
- Title:
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Effects of Fertilization on Water Consumption Characteristic and Grain Yield of Linum usitatissimum L. in Dry Land
- Author(s):
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WU Bing1,2, GAO Yuhong2,3, GAO Zhenni2,4, YAN Bin2,3, ZHANG Zhongkai2,3, CUI Zhengjun2,3, NIU Junyi2,3
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1. College of Life Sciences and Technology, Gansu Agricultural University, Lanzhou 730070, China;
2. Gansu Provincial Key Laboratory of Arid land Crop Science, Lanzhou 730070, China;
3. College of Agronomy, Gansu Agricultural University, Lanzhou 730070, China;
4. College of Information Sciences and Technology, Gansu Agricultural University, Lanzhou 730070, China
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- Keywords:
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Linum usitatissimum L.; fertilization; water consumption characteristic; grain yield
- CLC:
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S563.2
- DOI:
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- Abstract:
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In order to regulate the combined application levels of N and P reasonably in the process of Linum usitatissimum L. production, field experiment in dry land was conducted to elucidate the effects of fertilization on water consumption characteristic, grain yield and water use efficiency of Linum usitatissimum L. which was ‘Longyaza 1’, thereby providing theoretical reference for fertilizer application of rain-fed Linum usitatissimum L. in hilly area of the Loess Plateau. Four fertilizer application treatments were 2 nitrogen levels: N1(75 kg/hm2) and N2 (150 kg/hm2), and 2 phosphorus levels: P1 (75 kg/hm2) and P2 (150 kg/hm2), which were marked for N1P1, N1P2, N2P1, N2P2, and the control (N0 P0) was without nitrogen and phosphorous fertilizer. The results indicated that total water consumption rose with increase of the application amounts of N and P in 2013, reached the peak as the fertilization increased to the level of N2P1 in 2014 and markedly enhanced by 10.23% than N2 P2 which was the maximum rate of fertilizer. Compared with the N0P0, the water consumption at depth of 100—200 cm of soil obviously increased by 13.03~19.36 mm. Besides, water consumption at the budding to full-flowering periods had a sharp increase with the amount of fertilization in 2013, whereas the N2P1 was the most in 2014 and significantly enhanced by 19.25% and 17.87% than the N0P0 and N2P2, respectively. These results indicated that combined application of N and P could improve the absorption of soil moisture, especially for deep soil water, to meet the water requirement of Linum usitatissimum L. in later growth period. In addition, the grain yield of Linum usitatissimum L. decreased in the order: N2P1 > N2P2 > N1P2 > N1P1 > N0P0, and yield of N2P1 was 44.27%~56.55% higher compared the N0 P0. The changes of water use efficiency was fairly consistent with grain yield, and the N2 P1 was the largest, followed by the N2 P2 under different fertilizations, which were raised by 30.23%~38.54% and 20.50%~36.81%, respectively, compared with the treatment of N0P0. As far as saving-fertilizer and high-yield were concerned in the experiment, the most appropriate fertilizer treatment for recommendation was the one which had 150 kg/hm2 (N) and 75 kg/hm2 (P2O5) for rain-fed Linum usitatissimum L. under the climate conditions of the experimental area.