有机无机肥配施对鲜食型甘薯产量和品质的影响

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Effects Combined Application Organic Inorganic Fertilizers on Yield Quality Fresh-Eating Sweet Potato

Zhang Tingge，Huang Shihao，Qin Minghui， Yin Tao，Li Huan，Liu Qing （College ）

AbstractTo investigate the effcts combined application organic inorganic fertilizers on yield quality fresh-eating sweet potato，this experiment was conducted by using Yanshu 25 as material setting five fertilization treatments，i.e.，no fertilizer，chemical fertilizer alone， 25% organic fertilizer +75% （20 chemical fertilizer， 50% organic fertilizer + 50% chemical fertilizer， organic fertilizer alone，which were referred toas T1，T2，T3，T4 T5，respectively.Theeffcts diffrent fertilization treatments on the contents soluble sugar，vitamin C，amino acids，polyphenols flavonoids Yanshu 25 root tubers were studied，as well as the fresh potato yield.The results showed that the fresh potato yield each treatment in each the two years showed T4>T3>T2⩾T5>T1 ，among which， that T4 treatment was significantly higher compared with the other treatments，that T2 T5 treatments was not significantly diffrent significantly lower compared with the other treatments， the average fresh potato yield the two years T4 T3 treatments increased by 55.15% 37.14% compared with T1 treatment，respectively. In terms root tuber quality，on average over the two years，the soluble sugar content was the highest in T4 treatment，which was significantly higher than that in other treatments except T5；the polyphenol essential amino acid contents were the highest in T3 treatment，folowed by T4 treatment；the flavonoids content in T3 T4 treatments was not significantly diferent， was significantly higher than that inthe other treatments；vitamin C content was significantly different between the treatments，which showed T5>T4>T3>T1>T2 . It could be seen that combined application organic inorganic fertilizers could significantly improve the fresh potato yield quality Yanshu 25， the overall performance under 50% organic fertilizer + 50% chemical fertilizer treatment（T4 treatment）was the best under the conditions this experiment.The results this study could provide a theoretical basis for rational fertilization fresh-eating sweet potato cultivation management yield quality improvement.

KeywordsCombined application organic inorganic fertilizers; Fresh-eating sweet potato；Fresh potato yield； Root tuber quality

我国是一个农业大国，长期的化肥过量施用不仅带来农田土壤酸化、板结、水体富营养化等土壤和环境质量问题[1-2]，还影响到农作物的产量和品质，导致农业生产成本的增加和效益下降[]。（剩余9689字）