沙田柚施用活化处理磷肥的效果研究

Effect of Applying A Activated Phosphorus-fertilizer to Citrus grandis cv. Shatianyou

研究了以沙田柚施用经多种活化剂活化处理磷矿粉的效果，结果表明，施用活化处理磷矿粉的柚树在各生育期的树叶片养分状况均比施用过磷酸钙和钙镁磷肥的好，所以在各时期的农艺性状表现良好，产最较高，在适当时期补充中微量元素不仅可使沙田柚高产而且优质。研究结果显示，果树可直接和一年一次施用价格低廉价的磷矿粉，采用活化技术可使磷矿粉的肥效超过过磷酸钙和钙镁磷肥，从而可大幅度地降低果园的肥料和施肥用工费而降低生产成本，同时又可减少因施肥过量和磷肥生产而造成的浪费和环境污染。

This paper summarized the investigation about application phosphorite powders activated by of organic activation substance in fruit trees. The nutrient of leaves at application phosphorite powders activated by of organic activation substance in fruit trees were excelled application calcium superphos- phate and calcium magnesium phosphate, the agriculture character were exhibit all right and output were higher. The result of study were show that fruit trees can apply directly or annually phosphorite powders low -cost, when the activation art were used the effect of phosphorite powders exceed calcium superphosphate and calcium magnesium phosphate, accordingly the cost of fertilizer and charge of ap- plication fertilizer were debased, at the same time the waste and circumstance pollute because of fertil- ization excessive and phosphor-fertilizer production would reduced, also the byproduct in rubbish liquid of paper making were used thereby the industry rubbish were turned into the resource and that de- creased its two pollute.