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。
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。
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。
The study status, the existing problems and the research in the future for the crop root water uptake models were summarized in this paper.
综述了作物根系吸水模型的研究现状、存在问题和研究展望。
Under intensive cropping with retention of crop residue management regimes, soils can become suppressive to Rhizoctonia root rot.
保留作物残体的精耕栽培制度可使土壤变为对病害有抑制作用的抑病土。
According to previous research and data, this paper review some aspects how quality of some crops such as cereal crop, root and tuber crop, vegetable and flue-cured tobacco is affected by potassium.
根据前人的资料和研究，对钾如何影响谷类作物，块根、块茎作物、蔬菜及烤烟品质的问题作了简要评述。
The principle of GREENLAB plant model can apply to simulate morphology and biomass partitioning of crop root system.
GREENLAB模型的原理可以应用于对作物根系形态结构和生物量分配的动态模拟；
The tree root distribution and management study is to select tree root type which fit in with the needs of crop.
其中林木根系分布与管理研究内容是通过对林木根系类型的筛选，选择与农作物根系矛盾较小的树种；
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。
The influence of root growing space of maize upon root physiological characteristics, nutrient uptake and crop yields were studied under conditions with and without supply of water and n.
在不供应和补充供应水、氮条件下，研究了限制根系生长空间对玉米根系生理特性、植株养分吸收及产量的影响。
In the model, the leaf area index (LAI), crop coefficients, and root penetration and distribution were simulated for the winter wheat and summer corn double cropping system.
模型对冬小麦—夏玉米轮作体系作物叶面积指数、作物系数、根系生长与分布进行了模拟。
There are few studies on the effect of crop root systems on the composition, particularly on the heavy fraction of soil humus.
本文对黑钙土、黑土中各种作物根茬留茬与否对土壤腐殖质、土壤重组有机质的组成、结合形态及某些光学性质进行了测定。
The utility model relates to a blackland and clay root and stem crop ditch loosening machine for loosening soil.
本实用新型涉及一种疏松土壤的黑粘土地根茎作物沟土疏松机。
The test result showed that developmental root system could improve the physical and chemical nature of soil, increase yield of latter-crop.
结果表明，强大的绿肥根系，能够改善土壤理化性质，提高后作物产量。
The destruction land structure, the hindrance plant absorption moisture content and the root system grows, affects the crops crop.
破坏土地结构，阻碍植物吸收水分及根系生长，影响农作物收成。
The destruction land structure, the hindrance plant absorption moisture content and the root system grows, affects the crops crop.
破坏土地结构，阻碍植物吸收水分及根系生长，影响农作物收成。
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