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在幼、中、成龄胶园中进行了柱花草间种的生态适宜性试验。结果表明，仅幼龄胶园可以间种，间种后土壤肥力略有下降，对胶树生长亦有一定影响，但无显著差异，柱花草产量为全光照的46．5％。中、成龄胶园不宜间种柱花草，原因是：（1）中、成龄胶园内光照太弱，上午10：00平均仅为全光照的13％；（2）中、成龄胶园行间整地后橡胶营养根系生长迅速，密布土壤表层，柱花草无法同其竞争；（3）中、成龄胶园柱花草长势弱，易遭受从橡胶树冠落下的雨滴打击，林地湿度较大，炭疽病十分严重易导致衰败。对Wasana的PER和LER评价公式进行了修正，建立了土壤养分均衡率公式，采用了Wasana的IER经济效益评价公式，对幼龄胶园间作柱花草的效益进行了评价。
In the young, middle and old plastic garden, the ecological adaptability test was conducted between the column and the grass. The results showed that only the young rubber plantation could be intercropped and the soil fertility decreased slightly after interplanting, but also had some effect on the growth of gum trees. However, there was no significant difference between them. The yield of stalks was 46.5% of full light. , The reason is: (1), the light in the aging plastic garden is too weak, the average is only 13% of the full light at 10:00 in the morning; (2) After the land preparation, the root of rubber nutrition grows rapidly, and the dense soil surface and column flower can not compete with the stamens. (3) In the middle and old age, the rubber garden column grows weakly and is vulnerable to raindrops falling from the rubber tree crown. Anthrax is very serious and easily lead to decline. Wasana’s PER and LER evaluation formula was amended to establish a formula for soil nutrient balance, using Wasana’s IER economic evaluation formula to assess the effectiveness of the young plastic plantation columnar flowers.