荔枝园土壤肥力特征及其专用肥综合效应探析

Soil fertility characteristics of litchi orchard and integrated effects of specialized fertilizers

  • 摘要: 对荔枝园土壤肥力特征及其专用肥综合效应研究结果表明,荔枝(妃子笑)园土壤树围土(滴水线以内)和裸地土(滴水线以外)土壤肥力之间存在明显差异,其中有效磷和有效钾比裸地提高341.27% 和683.77% 。中肥处理(年施纯N 0.46kg/株)为合理施肥量,可提高树围土壤肥力,保持树体营养相对平衡,且挂果状况最佳。并提出修改荔枝专用肥配方建议,即适当降低专用肥中P、K比例,特别是促梢肥和促花肥。

     

    Abstract: The soil fertility characteristics of litchi orchard and its integrated effects of specialized fertilizers were studied.The results show that the soll fertility indices between the soil within the tree circle(tree-circle soil)and that outside the tree circle(bare soil)are much different,the available P and K of the former are increased by 341.27% and 683.77% than those of the latter respectively.The medium fertilization treatment can improve the soil fertility indices within tree circles,balance the nutritional status of litchi leaves,and reach the best fruit-setting status.Some suggestions of changing the recipe of the specialized fertilizer for green-food litchi are put forward,that is,the ratios of P and K are appropriately decreased in the specialized fertilizer,especially in the fertilizers for promoting shots and flowers.

     

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