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为研究成龄胶园条件下间作薯类作物对胶园土壤养分和土壤酶的影响,以间作4种薯类作物的胶园为处理,单作胶园土壤为对照,采用土壤常规分析方法分别测定土壤养分和土壤酶,为成龄胶园薯类作物间作合理施肥和土壤培肥提供理论依据。结果表明:间作的4种薯类作物均不同程度降低了胶园土壤的有机质(除间作红薯外)、全氮(除间作红薯外)、全磷、速效磷含量、p H值、土壤脲酶活性、酸性磷酸酶活性(除间作红薯外)及过氧化氢酶活性(除间作芋头外),不同程度增加了铵态氮、硝态氮、全钾、速效钾含量及土壤蔗糖酶活性。说明成龄胶园间作薯类作物能改善土壤硝态氮、铵态氮、全钾及速效钾含量,短时期内能提高土壤的供氮、供钾能力,但降低了土壤磷含量和土壤磷的供应能力。由此可见,在成龄胶园内进行间作,必须加强作物施肥,以实现土壤养分的收支平衡,维护土壤功能、保护土壤质量。
In order to study the effect of intercropping potato crop on the soil nutrient and soil enzyme in rubber plantation under the condition of aging plasticized garden, the plasticized garden with intercropped 4 kinds of potato crops was used as the treatment, and the plasticized soil was used as the control. Soil common analysis method Determination of soil nutrients and soil enzymes, for the plastic pots yam crops intercropping reasonable fertilization and soil fertility provide a theoretical basis. The results showed that the four intercropping potato crops reduced the contents of organic matter (except sweet potato), total nitrogen (except intercropped sweet potato), total phosphorus, available phosphorus, p H, soil urease activity , Acid phosphatase activity (except for intercropping sweet potato) and catalase activity (except intercalant taro) increased ammonium nitrogen, nitrate nitrogen, total potassium, available potassium and soil invertase activity to varying degrees. The results showed that the potato plantation could improve nitrate nitrogen, ammonium nitrogen, total potassium and available potassium in soil, and could increase soil nitrogen and potassium supply in a short period of time, but decreased soil phosphorus content and soil phosphorus The supply capacity. Thus it can be seen that intercropping in an aging plastic plantation must strengthen crop fertilization in order to balance the income and expenditure of soil nutrients, maintain soil functions and protect soil quality.