Effects of Potassium Chloride on Growth Characteristics and Yield of Sweet Potato

doi:10.7668/hbnxb.2015.03.026

Abstract

Abstract: In order to study the effect of potassium chloride on growth and yield of sweet potato,this paper studied the effects of different dose of potassium chloride on the growth,yield and other factors of four sweet potato,to explore the most suitable dosage effect.The results showed that there were some differences of the yield and quality characteristics of sweet potato varieties on potassium chloride.The four kinds of sweet potato yield were significantly increased by potassium chloride.The maximum growth range was by 47.24% to 116.36%.However,sweet potato yield value were changed in "parabola" path,to increase,then lower;number of sweet potato tuber and single potato weight were significantly positively correlated to fresh potato yield.It was illustrated that potassium chloride increased sweet potato yield,because of number of sweet potato tuber and single potato weight increased,then they were some differences between sweet potato varieties.A certain amount of potassium chloride could significantly improve the potato tuber starch content,soluble sugar content and soluble protein content,but when potassium chloride content was exceeded 562.5 kg/ha,the growth rates of sweet potato quality parameters were reduced.The amount of potassium chloride was not more than 375.0 kg/ha,which was very appropriate considering some factors,such as the yield,quality and economic benefit in sweet potato.

Key words: Sweet potato, Potassium chloride, Yield, Quality

CLC Number:

S531.01

LIU Yun-ping, YANG Shou-xiang, SHI Yan-xi, LIU Qian. Effects of Potassium Chloride on Growth Characteristics and Yield of Sweet Potato[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2015, 30(3): 146-152. doi: 10.7668/hbnxb.2015.03.026.

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