There are hundreds of related plants, including rubber trees, trees that produce castor and tung oil, and the cassava, a root crop.
大戟科有数百种相关植物，包括橡胶树，产生蓖麻油和桐油的树，以及木薯这种块根作物。
There was also a significant correlation between the root activity, root weight and soil potassium uptake of the same crop.
此外，不同土壤上同种作物的根系生物产量、根系活力与作物吸钾量间也呈正相关。
The organisms from crop root exudates were collected directly by putting slide onto root surface and observed the organisms on the slide and root surface by fluorescence microscope.
利用改进根箱法对玉米和花生根际生物进行了原位采样和观察。 采用载玻片贴片方法直接采集到作物根系分泌物中的生物，并用荧光显微镜进行观察。
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