Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2014, Vol. 30 ›› Issue (3): 112-116.doi: 10.11924/j.issn.1000-6850.2013-0960

Special Issue: 油料作物

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Study on Potassium Accumulation Dynamics in Different Dry Soil Types of Peanut

  

  • Received:2013-04-03 Revised:2013-06-05 Online:2014-01-25 Published:2014-01-25

Abstract: In order to provide scientific fertilization for dry soil of peanuts, under the condition of field cultivation, with lime concretion black soil and brunisolic soil for object, plant K fertility characteristics in peanut growing season were studied. The results showed that roots, stems and leaves K accumulation in the two kind soil had a low level in seedling stage, and the difference was not much. From 50th day after emergence to maturity, K accumulation of root in lime concretion black was significant higher than that in brunisolic soil. But K accumulation of stem and leaf was significant lower than that in brunisolic soil after 60th day of emergence. K accumulation in peanut fruit kernel of lime concretion black soil was 60 percent higher than that of brunisolic soil. Peanut whole plant K accumulation in two kind soil types accorded with Logistic equation, and whole plant K accumulation in lime concretion black soil was 10 percent higher than that in brunisolic soil in mature stage. Absolute magnitude in the stem and leaf K transferred to the pod of brunisolic soil peanuts were less than that of lime concretion black soil, but the total ratio of the stem and leaf K accumulation transferred to pod of brunisolic soil was higher than lime concretion black soil. Improving for K conversion rate of peanut is an effective way for using efficiency of K in lime concretion black soil.