[1]DAI Liangxiang,SONG Wenwu,DING Hong,et al.Effect of Irrigation with Fertilizer on Spatial-Temporal Variation of Soil Moisture, Nitrogen and Phosphorus Contents at Flowering Stage in Peanut Field[J].Research of Soil and Water Conservation,2018,25(05):41-48.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
25
Number of periods:
2018 05
Page number:
41-48
Column:
Public date:
2018-09-06
- Title:
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Effect of Irrigation with Fertilizer on Spatial-Temporal Variation of Soil Moisture, Nitrogen and Phosphorus Contents at Flowering Stage in Peanut Field
- Author(s):
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DAI Liangxiang1, SONG Wenwu1, DING Hong1, LIU Mengjuan1, ZHANG Guanchu1,3, SHI Xiaolong1,3, ZHANG Zhimeng1, LI Wenjin2
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1. Shandong Peanut Research Institute, Qingdao, Shandong 266100, China;
2. Taian Academy of Agricultural Sciences, Taian, Shandong 271000, China;
3. Xinjiang Agricultural University, Urumqi 830052, China
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- Keywords:
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peanut (Arachis hypogaea); film drip irrigation; fertilization; soil moisture; NO3--N; soil nutrient
- CLC:
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S565.2
- DOI:
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- Abstract:
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To study the effect of irrigation with fertilization at flowering stage on soil moisture, hydrolysable nitrogen, Olsen-P and NO3--N content in 0-100 cm soil profile, the peanut Huayu 22 and Huayu 25 were planted under filed condition. Three treatments were set 20 days after flowering. The treatments are:(1) Only irrigation, (2) Irrigation with 20 kg/hm2 nitrogen, and (3) Irrigation with 30 kg/hm2 nitrogen using the method of drip irrigation beneath film. The results showed that:(1) the soil moisture content in 0-100 cm soil profile increased with increase of soil depth, which could keep the soil moisture content stable. Nitrogen fertilizer could make increase of soil moisture content lag for 10 days in 0-60 cm layer compared with no fertilizer treatment, and high nitrogen treatment could make water infiltration slow, and variability of water content in 20-40 cm soil layer increased; (2) NO3--N content in 0-60 cm soil layer increased under irrigation with nitrogen treatment, irrigation was the risk of NO3--N leaching migration after 10~20 days, its leaching time synchronized with soil moisture; high amount of nitrogen fertilizer make the risk of nitrate leaching peak 10 days in advance; (3) the soil hydrolysable nitrogen content in 0-100 cm soil profile increased under irrigation with fertilization, while the soil hydrolysable nitrogen content in 0-40 cm soil layer decreased to 57.4~89.6 mg/kg under nofertilization 60 days after flowering; the high amount of applied nitrogen could enhance soil hydrolysable nitrogen leaching risk; (4) the soil Olsen-P content in 0-40 cm soil layer increased significantly under irrigation and fertilization treatments; and the peak of phosphorus supply intensity delayed 20~40 days by application of nitrogen fertilizer; applying nitrogen fertilizer and complementary irrigation at peanut blooming stage can enhance the soil water, NO3--N and hydrolyzed nitrogen content in 0-60 cm soil layer and Olsen-P content in 0-40 cm soil layer, and can decrease the hydrolyzed nitrogen infiltration rate; in this way, water and fertilizer use efficiency can be promoted; the amount of applied nitrogen should not exceed 30 kg/hm2 in order to reduce the risk of nitrogen nutrient leaching.