氮磷钾肥对油用向日葵产量、产量性状和养分利用特性的影响

doi:10.12190/j.issn.2096-1197.2020.03.15

Abstract

Abstract: 【Objective】The main characters and nutrient uptake and utilization characteristics of oil sunflower were studied to provide scientific basis for fertilization of oil sunflower at the northern area of Yinshan Mountain.【Methods】The experiment of applying NPK fertilizer to oil sunflower was carried out in the northern area of Yinshan Mountain,and the effects of fertilization on the yield,yield characters and nutrient uptake and NUE were analyzed.【Results】NPK fertilizer had little effect on disc diameter,disc number of achenes,achenes weight and seed setting rate of oil sunflower,but had significant effects on stem diameter,disc achene weight and ratio of achenes to kernel in oil sunflower.Ensuring nutrient supply at budding stage could ensure the increase of stem thickness,disc weight and ratio of achenes to kernel in oil sunflower,so as to increase the yield.Under the condition of mulching film drip irrigation at the northern area of Yinshan Mountain,NUE of N,P,K by N₂P₂K₂ was 33.6%,26.5% and 42.8%,respectively.AE of N,P,K was 3.96,6.92 and 1.87 kg/kg,respectively.For each 100 kg sunflower seeds,N,P₂O₅ and K₂O were needed 6.61,1.97 and 7.55 kg,respectively.【Conclusion】The suitable rate range of N,P₂O₅ and K₂O for oilseed sunflower in the North Yinshan was defined as 154.1-183.0,88.5-100.9 and 96.4-122.0 kg/hm².

Key words: Oilseed sunflower, NPK, Yield, Yield Characters, NUE

CLC Number:

S565.5

DUAN Yu, GUO Shijia, FAN Xia, ZHANG Jun, AN Hao, LIANG Junmei, WU Yunxia. Effects of N,P and K fertilizer on yield,yield characters and nutrient utilization characteristics in oilseed sunflower[J].Journal of Northern Agriculture, 2020, 48(3): 97-102.

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References 14

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Effects of N,P and K fertilizer on yield,yield characters and nutrient utilization characteristics in oilseed sunflower

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