Effects of Long-term Non P Fertilizer Application on Yield and Quality in Sweetpotato

doi:10.7668/hbnxb.2011.S2.024

Abstract

Abstract: The effects of long-term non-P fertilizer on yield and quality in sweetpotato were studied in long-term stationary field experiment,which was established in 1980 in yellow fluvo-aquic soil.The results showed that long-term non P fertilizer treatment would delay the swelling period of sweetpotato storage root and reduce daily output,so as to caused the drop of fresh root yield(P0.05).Compared with application of P fertilizer,the dry matter and starch and protein content of sweetpotato storage root had no obvious decrease(P0.05).The content of soluble sugar and reducing sugar ware markly improued by long-term non-P treatment(P0.05),and the viscosity of sweetpotato starch had evident drop.There were differences in yield response of different sweetpotato varieties under the long-term non-P fertilizer,and Xushu18 with high endurance of low-P stress and Xushu27 with high P efficiency,and Suyu303 with K sensitive were selected preliminary,it provides useful materials for breeding and production of sweetpotato.

Key words: Stationary experiment, P fertilizer, Sweetpotato, Yield and quality

CLC Number:

S143.2

ZHANG Ai-jun, LI Hong-min, TANG Zhong-hou, SUN Jian, ZHU Hong, SHI Xin-min, XU Fei. Effects of Long-term Non P Fertilizer Application on Yield and Quality in Sweetpotato[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2011, 26(S2): 104-108. doi: 10.7668/hbnxb.2011.S2.024.

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