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| Effect boron on Litchi Yield and Ca-B forms |
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| Abstract: |
| Effect of Boron（ B） on litchi（ Feizixiao） yield，planting benefit and Ca-B form was discussed through field fertilizer efficiency test and laboratory analysis. The results show:（ 1） Litchi fruit achieves the strongest B transportation and storage capability under 0.05% ~0.1% fertilization of borax. This is the optimal fertilization to accumulation of different forms of Calcium（ Ca） in pericarp，pulp and pit.（ 2） Calcium pectinate and calcium oxalate are the main forms of Ca in litchi pericarp and pit，while calcium pectinate，calcium phosphate and water-soluble calcium are the main forms in litchi pulp. Water-soluble B is the main form of B in litchi pericarp，pulp and pit.（ 3） To gain the highest fruiting number，number of fruiting branches，yield and planting profit in the main litchi producing area in Conghua，Guangzhou，it is suggested to adopt 0.05% spraying fertilization of borax，but avoid spraying of B，Ca and naphthylacetic acid simultaneously. |
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