Wheeler said that scientists have not yet studied the yam's nutritional value to see what benefits the plant offers as a food crop.
怀勒说，科学家尚未对这种山药的营养成分及食用益处进行研究。
Wheeler said scientists have not yet studied the yam's nutritional value to see what benefits the plant offers as a food crop—and despite its popularity, pickings are already slim.
怀勒说，科学家尚未对这种山药的营养成分及食用益处进行研究。尽管安格那山药深受欢迎，但产量稀少。
The family has been unable to plant its main sorghum crop, she says, and their buffaloes are becoming “diseased”, a euphemism for starving.
今年，她们家没有办法种植主要的农作物高粱，莎丽拉说到，而且她们家的水牛都“不健康”了--对于挨饿的一种委婉说法。
Why do farmers in Ping Bian continue to plant such a tightly controlled, labor intensive crop?
为什么屏边的农民还要继续种这种控制严格、劳动密集的作物呢？
It would be an optimistic scenario that, farming everywhere, people were happy to plant a slightly different variety of crop.
如果世界各地的农民都乐于种植那些与常规品种稍稍有些不同的作物的话，我们会有一个很乐观的前景。
Reilly points out that IPCC predicts an increase, not a decrease, in global crop production, as more CO2 in the atmosphere is beneficial for plant growth.
莱利指出，IPCC的预测是全球农作物增产而非减产，因为大气中增加的二氧化碳对于植物的生长是有利的。
Though conditions are extremely difficult, Geddo says many people he met told him they are staying put in the hopes they can plant a crop when the rainy season begins in October.
他说，尽管他们面临的情势极度艰难，他接触到的许多人还是对他说，他们留下不动，指望十月份的雨季开始时，可以种些庄稼糊口。
Rice is an important worldwide cereal crop, as well as a model plant for molecular biology research.
水稻是世界上最主要的粮食作物之一，也是分子生物学研究的重要模式植物。
It is late June and the rainy season is coming to an end. Tomatoes are a valuable cash crop during the coming dry season and Mr Makawa wants to plant his seedlings as soon as possible.
时值六月末，雨季行将结束，在未来的旱季中西红柿将是相当有价值的经济作物，因此Makawa先生希望能够尽快将西红柿幼苗种好。
BILLION: Value of Italy's 2008 crop of tomatoes, a plant native to South America.
14亿美元：2008年，原产南美的西红柿在意大利的年产值达到14亿美元。
They teach farmers, gardeners, and other plant growers how to fight viruses that can ruin a valuable crop or discolor a beautiful landscape.
同时传授农民、园艺工人和其他栽培人员如何对抗那些摧毁珍贵作物和美丽风景的病毒。
BS with a minimum of 3 years' experience or MS Degree in agronomy, crop protection, plant breeding, plant physiology, horticulture, etc.
本科及以上学历，本科学历要求有3年以上相关工作经验；农学、植保、园艺、作物育种、植物生理及相关专业。
The plant fiber film is a kind of new film made from reed or crop straw.
植物纤维膜是一种由芦苇或农作物秸秆制成的新型薄膜。
Edge bias in crop evaluations, inclusion of a plant on the edge of the square delineating the area to be measured, rather than excluding it, leading to an upward bias.
边缘偏差，边角偏倚在评估作物时，把要测算的正方形区域边缘上的一株植物包括在内而不是排除在外，导致估计过高的偏差。
Genetic improvement of plant nutritional characters provides a new approach towards increasing the crop yields in unfavorable soil environments.
植物营养性状的遗传学改良是提高不良土壤营养环境中作物产量的一条新途径。
Rice is not only the most important food crop in the world, but also a model plant for study of the molecular developmental biology in monocots.
水稻是世界上最重要的粮食作物之一，也是单子叶植物发育分子生物学研究的理想模式植物。
Geminiviruses are a group of plant DNA viruses characterized by their unique twinned particles, and are currently emerging as a major threat to crop production worldwide.
双生病毒是一类具有孪生颗粒形态的植物单链dna病毒，目前已在多个国家和地区的作物上造成毁灭性危害。
Turnip mosaic virus is a worldwide popular kind of plant virus, which caused serious damages to the crop production.
芜菁花叶病毒是种世界性流行的植物病毒，它给作物生产带来严重危害；
The study of plant nutrition and growth especially as a way to increase crop yield.
对植物营养与生长，特别是为增产的研究。
A related technique would be to plant both early - and late-maturing varieties of the same type of crop around the same time, and harvesting the resulting crops successively.
相关的技巧可以在相同的时间里生长的同类作物中用来种植它们早熟与晚熟的不同品种，而得到它们接替不断的供应。
The plant can reduce a farmer's crop. Or it can completely destroy many hectares of grain.
这种植物会使农民的庄稼减产，甚至能彻底摧毁大面积的谷物。
Analysts and traders say farmers are likely in the 2008 crop season to plant more wheat at the expense of cotton and, to a lesser extent, corn, barley and soyabeans.
分析师和交易员们表示，在2008种植季，农民可能放弃种植棉花，转而种植更多的小麦，并减少种植玉米、大麦和大豆。
During the history of plant breeding there has been a desire to increase the choice of genes (the gene pool) available FOR crop improvement.
在植物育种的历史中，人们一直希望增加对可用于植物改良的基因(基因库)的选择机会。
If possible, in the year before you plant potatoes, plant a cover crop to improve the soil and the potato production.
如有可能，可在种土豆的前一年种上农作物，以改善土质，从而提高土豆产量。
If possible, in the year before you plant potatoes, plant a cover crop to improve the soil and the potato production.
如有可能，可在种土豆的前一年种上农作物，以改善土质，从而提高土豆产量。
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