Effect of Different Organic Fertilizers on Enzymatic Activity and Nutrient Content of Tobacco Planting Soil in Centre Henan

doi:10.11924/j.issn.1000-6850.casb17010001

Abstract

Abstract: The paper aims to select the optimum organic fertilizer for tobacco planting soil in central Henan by analyzing the effect of different organic fertilizers on major soil enzyme activities and nutrition content. A field experiment was carried out with the same application amounts of chemical fertilizer and sesame cake fertilizer, four treatments were set up: (1) no organic fertilizer (CK); (2) refined-organic fertilizer, 1500 kg/hm2(T1); (3) organic fertilizer No.1, 600 kg/hm2(T2); and (4) compound-organic-bio-fertilizer, 1500 kg/hm2(T3). The results showed that soil sucrase and urease activity were significantly improved by the maximum value of 11.47 mg/(g·d) and 1.45 mg/(g·d), respectively, under T1 treatment, the available phosphorus and available potassium content were also elevated by the maximum value of 43.08 and 472 mg/kg, respectively. The soil available nitrogen content was significantly improved under T3 treatment, and reached 400 mg/kg in vigorous growth stage. At Xuchang tobacco area, the combined application of organic fertilizer with chemical fertilizer could obviously improve soil fertility, especially the treatment of refined-organic fertilizer or compound-organic-biofertilizer combined with sesame cake fertilizer.

References

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