Effects of Optimizing Fertilization on Yield and Quality of Winter Potato in Guangdong Province Under Chemical Fertilizer Reduction
The effects of optimizing fertilization on yield and economic benefit of winter potato under chemical fertilizer reduction were discussed in this paper.This study explored the reasonable and scientific fertilization amount in southern potato winter cropping district, and provided theoretical basis for the green and efficient development of winter potato industry in Guangdong Province.[Method]There were three treatments,including optimizing fertilizer,conventional fertilizer and no fertilizer treatment.The effects of three treatments on yield,nutrient content,quality and economic benefit of winter potato in Guangdong Province were studied with Favorlta first level virus-free seed potato as ex-perimental material.[Result] The optimizing fertilizer treatment has higher total yield,marketable tuber yield and total value and lower fertilizer cost than the other two treatments. The total yield and marketable tuber yield of optimizing fertilizer treatment were 1093. 8 kg/hm2 and 793.4 kg/hm2 higher than conventional fertilizer treatment.There was no significant difference between optimizing fertilizer treatment and con-ventional fertilizer treatment on potato tuber quality parameters (P>0.05).The comprehensive partial productivity of nitrogen,phosphorus,and potassium fertilizers of optimizing fertilizer treatment was 33.52 kg/kg,increased by 24.55％,significantly higher than conventional fertilizer treatment.The fertilizer cost of optimizing fertilizer treatment was 3334.2 yuan/hm2 lower than conventional fertilizer treatment,decreased by 19.92％.The total value of optimizing fertilizer treatment was 36446.0 yuan/hm2,significantly higher than conventional fertilizer treatment. [Conclusion] Overall,optimizing fertilizer treatment was a better choice with a good yield,quality and value of winter potato in Guangdong Province.The optimizing fertilizer could reduce chemical fertilizer in winter potato cultivation,achieve green and efficient while ensure the im-provement and stability of yield and quality.
万方数据
维普
