A field plot experiment was carried out in random block design,and the treatments of 5 different fertilizer application methods were designed,including T0:conventional application of chemical fertilizer(CK);T1:normal chemical fertilizer plus organic fertilizer;T2:20%reduction of chemical fertilizer plus organic fertilizer;T3:40%reduction of chemical fertilizer plus organic fertilizer;T4:60%reduction of chem-ical fertilizer plus organic fertilizer(T4).The plant height,pseudo stem girth,leaf number,leaf length,leaf width,finger number and finger weight of all treatments were investigated,and their fruit yield was measured and the economic benefits of different treatments were calculated with multiple comparative analysis.The results showed that compared to the CK,the fruit yield of treatment T1 in the first two years were significantly increased by 22.3%-23.8%.Treatment T2 and treatment T3 had significant(p＜0.05)effects on increasing pseudo stem girth and leaf numbers of the plant,and increased the fruit yield by 17.9%-20.1%,14.9%-19.3%,respectively,in the first two years compared with CK.Economic benefit analysis showed that compared with CK,the net income of treatment T3 was increased by 42.4%-62.4%in the second year,and the output to input ratio increased from(1.21-1.26)︰1 to(1.27-1.39)︰1,showing the best comprehensive economic benefit.Chemical fertilizer reduction plus organic fertilizer could improve the agronomic characters related to banana growth,increase the yield and economic benefits.It is suggested to popularize the use of organic fertilizer(chicken manure+composite microbial liquid fertilizer).Chemical fertilizer reduction of 40%+chicken manure+composite microbial liquid fertilizer is a suitable chemical fertilizer reduction and efficiency model for banana cultivation in Hannan.
reduction of chemical fertilizerbananaorganic fertilizeryield
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