由华南热带作物科学研究院热作所与广东省药材公司合作研究的《成龄胶园间种益智》科研课题,于1987年5月8日在华南热带作物科学研究院通过了技术鉴定。6年试验结果表明:在成龄橡胶园间种益智对橡胶树产量和生长没有不良影响,且益智生长正常,经济效益也高,正常年份,间作2行益智,每 The research project of “Yizhi Jiaozhong Yizhi” jointly researched by the Research Institute of Tropical Crop Research Institute of South China Tropical Crops Institute and Guangdong Medicinal Materials Company passed the technical appraisal at South China Institute of Tropical Crops Research on May 8, 1987. The results of six years showed that: the planting of puzzle in mature rubber plantation had no adverse effect on the yield and growth of rubber tree, and the growth of puzzle was normal and the economic benefit was also high. In normal years, intercropping 2 lines puzzle,