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。

Ameliorated root system was able to improve crop water use and nutrient absorption, and hence, crop yield and water use efficiency was increased.

施肥能够促进春小麦根系的生长发育，特别是促进浅层根量的增加，增强了作物的水分养分吸收。

According to the need of crop root research, the South China Agricultural University crop root laboratory was built.

根据作物根系研究的需要，设计和建造了华南农业大学作物根系研究室。

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。

Cassava is a starch crop of which the product harvested is the root tubers.

木薯是淀粉作物，收获的产品主要是块根。