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| Effects of In-situ Monoammonium Phosphate and In-situ Ammonium Polyphosphate on the Growth of Banana |
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| DOI：10.16768/j.issn.1004-874X.2020.08.010 |
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| Abstract: |
| 【Objective】Increasing the utilization efficiency of phosphate fertilizer is an important method to solve the excessive fertilization in the soil of banana production areas in southern China. The research on in-situ MAP and APP will provide theoretical basis and data support for the reasonable selection of phosphate fertilizer in banana producing areas in southern China.【Method】The banana variety Nantianhuang was selected as test crop and MAP, YMAP, APP and YAPP were used as the test fertilizers. The field experiments were conducted to study the effect of different phosphorus on the growth characteristics, nutrient absorption and utilization efficiency, yields and economic benefits of bananas under drip irrigation modes.【Result】Compared with CK（no phosphate fertilizer）, YMAP and YAPP could increase plant height, pseudostem circumference, green leaf number, leaf length and leaf width at the bud stage; YAPP and YMAP significantly increased the available nutrient contents of banana leaves. Compared with MAP treatment, the contents of nitrate nitrogen, available phosphorus and available potassium under YAPP treatment were increased by 35.4%, 3.9% and 6.9%, respectively. The yield of YMAP increased by 7.6% compared with that of MAP treatment, and the yield of YAPP increased by 1.9% compared with that of APP treatment.【Conclusion】In-situ MAP and in-situ APP are promising fertilizer sources in Hainan banana production areas, especially, in-situ MAP has obvious advantages in terms of banana yield and economic benefits. |
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