胶园间作研究的现状、存在的问题及未来研究方向

目前，胶园间作研究多集中在幼龄胶园，而对成龄胶园研究不多，多局限在生产力、生态、水分、化感作用、营养元素的生物循环与能量流动及经济效益上，而很少把它作为一个完整的复合生态系统来研究橡胶树与间作作物之间养分竞争、水分竞争，而养分、水分资源协同高效利用的研究则更是少见。未来胶园间作的研究应着眼于成龄胶园，解决成龄胶园各组分之间的养分、水分竞争问题，着重探讨成龄胶园根系及其分泌物对养分、水分竞争的影响作用，阐明养分、水分竞争的机制，提高间作系统养分、水分利用率，为成龄胶园间作中资源高效利用提供理论依据和技术支持。

Current Situation, Problems and Future Research Directions of Intercropping in Rubber Plantations

The studies on rubber plantation intercropping were focused on immature rubber plantation, and a little on mature rubber plantation. These studies on immature rubber plantation intercropping confined to the productivity, ecology, water, allelopathy, nutrient cycles, energy flows and economic benefits while there was very little study on nutrient competition, water competition between the rubber trees and intercrops. The study on high nitrogen and water utilization ratio is even more rare. The study on rubber plantation intercropping should focus on mature rubber plantation in the future and solve the problem of nutrient and water competition between the rubber trees and intercrops and emphatically investigate the effect of roots and root exudates on nutrient and water competition and clarify the mechanism of nutrient and water competition and improve the intercropping system nutrient and water utilization. These studies will provide a theoretical basis and technical support for resources use efficiency of mature rubber plantation intercropping.