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[1]HAN Xiaofei,GAO Ming,XIE Deti,et al.Effect of Combined Application of Organic and Inorganic Fertilizers on Inorganic Phosphorus Migration Characteristics in Purple Soil Sloping Field[J].Research of Soil and Water Conservation,2017,24(05):39-44.

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Effect of Combined Application of Organic and Inorganic Fertilizers on Inorganic Phosphorus Migration Characteristics in Purple Soil Sloping Field

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 24 Number of periods: 2017 05 Page number: 39-44 Column: Public date: 2017-10-28

Title:: Effect of Combined Application of Organic and Inorganic Fertilizers on Inorganic Phosphorus Migration Characteristics in Purple Soil Sloping Field

Author(s):: HAN Xiaofei^1,2, GAO Ming², XIE Deti², XIONG Zhenghui¹, WANG Shuai¹, LI Hongmei¹, PENG Zhengzhong¹, SHANG Yuefeng¹; 1. Chongqing Agricultural Technology Extension Station, Chongqing 401121, China;
2. College of Resources and Environment, Southwest University, Chongqing 400715, China

Keywords:: reduced phosphorus fertilizer combining organic fertilizers; phosphorus loss; source control and the loss curb

CLC:: S147;S158.3

DOI:: -

Abstract:: In order to explore the optimum fertilization model for reducing the loss of phosphorus in purple soil sloping field in the Yangtze River Basin, as well as reducing the threat to the water quality of the Yangtze River, seven experiment plots were conducted consecutively in five years. The treatments are times the amount of applied fertilizer (2P), optimum fertilization (P), optimization fertilization + pig manure organic fertilizer (MP), optimization fertilizer + straw (SP), optimum amount of fertilizer phosphorus minus 20% pig manure organic fertilizer (MDP), optimization of fertilizer phosphorus reduced 20% straw (SDP) and No application of phosphate fertilizer (P₀). The total phosphorus and available phosphorus contents at 0—20 cm, 20—40 cm, 40—60 cm soil layers, the different level of phosphorus and migration characteristics of purple soil sloping field inorganic phosphorus were investigated. The results showed that the characteristics of the annual runoff of the soil under dry sloping field could be seen that the loss of total phosphorus (TP) and total soluble phosphorus (TDP) were significantly different under different fertilization treatments. TP losses decreased in the order: 2P > P > MP > SP > MDP > SDP > P₀. TP loss in P treatment was about 1.5 to 2 times of those in the SDP and MDP treatments. TDP losses decreased in the order: 2P > MP > P > MDP > SP > SDP > P₀. Long-term of combined application of organic and inorganic fertilizers can significantly increase the accumulation of phosphorus in soil, suppress the decreasing of P fixation, enhance P mobility and P use efficiency, the promoting effect of pig manure is bigger than the rice straw. The application of organic and inorganic fertilizers can significantly increase the content of available phosphorus in soil, and reduction of chemical phosphate fertilizer and combined application of organic fertilizer is a good measure to deal with ‘source control and loss curb’ of agricultural non-point source pollution.

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