Effects of Different Fertilizer Treatments on Yield,Quality and Fertilizer Utilization Ratio of Potato under Mulching Drip Irrigation Conditions

doi:10.7668/hbnxb.2016.05.029

Abstract

Abstract: In view of a series of problems of a large number of inputs bringing the low utilization rate of water and fertilizer and nutrient loss in current production of high yield of potato,the effect of different fertilizer treatments on the yield,quality and the fertilizer utilization ratio of potato under mulching drip irrigation were studied in this paper under open field conditions.The different fertilizer treatments were composed of CK(No fertilizer),D1(1 245 kg/ha of slow-released of fertilizer),D2(1 500 kg/ha of compound fertilizer) and D3(675 kg/ha of water soluble fertilizer),and with farmers' conventional irrigation fertilization treatment CF(1 500 kg/ha of compound fertilizer with furrow irrigation) for comparison.The results indicated that different fertilization treatments under drip irrigation conditions increased the plant height,root length,root volume,leaf area index,chlorophyll content and plant fresh weight of potato and reduced the MDA content and SOD activity of potato.The test results also indicated that compared with conventional furrow irrigation fertilization,the treatments of D1,D2 and D3 with drip irrigation under mulch film promoted the potato on the absorption and accumulation of soil nutrients,increased the potato production by 18.4%,13.3% and 26.0% respectively.Starch content increased by 10.3%,5.5%,15.1% respectively,and the crude protein content increased by 12.9%,8.6% and 13.8% respectively.While the soluble sugar content reduced by 5.6%,2.4% and 15.3%respectively.Especially the D3 treatment with drip fertigation increased the fertilizer utilization ratio of nitrogen,phosphorus and potassium by 22.7%,20.5% and 23.5% respectively.From the point of view of the efficiency of agricultural use and the partial productivity of fertilizer,phosphate fertilizer was higher than that of nitrogen fertilizer and potassium fertilizer.Therefore,we should pay attention to the promotion of fertigation technology and the scientific application of fertilizer in potato production.

Key words: Drip irrigation, Fertilization treatment, Potato, Yield, Quality, Fertilizer use efficiency

CLC Number:

S152
S532

WU Xiaohong, ZENG Lusheng, LI Junliang, FANG Zengguo, LIANG Bin, WEI Fulong. Effects of Different Fertilizer Treatments on Yield,Quality and Fertilizer Utilization Ratio of Potato under Mulching Drip Irrigation Conditions[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2016, 31(5): 193-198. doi: 10.7668/hbnxb.2016.05.029.

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