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Chinese Agricultural Science Bulletin ›› 2014, Vol. 30 ›› Issue (36): 211-215.doi: 10.11924/j.issn.1000-6850.2014-1412

Special Issue: 油料作物

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Research of Phosphorus in Formula Fertilization by Soil Testing Index System for Peanut in Guangdong

  

  • Received:2014-05-15 Revised:2014-05-15 Accepted:2014-07-17 Online:2015-03-20 Published:2015-03-20

Abstract: This paper studied the effects of different fertilizer models on simulation for the 3414 fertilizer experiments, which were conducted from 2008 to 2012 in 30 cities in Guangdong Province. By analyzing the data, the index system of soil available phosphorus abundance of Guangdong peanut were established. The results indicated that, the regression equation index for soil available phosphorus content was y=9.3071lnx+ 57.724 (the correlation coefficients was 0.718); the regression equation of the recommended phosphorus content is y=- 1.047x + 95.606 (the correlation coefficients was - 0.739). According to the mathematical model, the sufficiency and deficiency range of the soil effective phosphorus were divided into 5 levels: <10 mg/ kg, 10- 20 mg/kg, 20- 35 mg/kg, 35- 55 mg/kg, and >55 mg/kg, and the proposed index of supplying phosphorus were 82.5 kg/hm2, 75.0- 82.5 kg/hm2, 60.0- 75.0 kg/hm2, 37.5- 60.0 kg/hm2 and 37.5 kg/hm2, respectively.