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Their activities cover crop physiology, plant nutrition, plant pathology, animal breeding, animal nutrition, agricultural development, plant resources etc.

他们的活动覆盖农作物生理学、植物营养学、植物病理学、动物饲养学、动物营养学、农业发展、植物资源等方面。

In agriculture,it influences the monoculture, crop rotation,crop cover and so on.S ome allelochemicals can be...

培育新的抗虫害、抑草品种，分离、鉴定新的化感物质，深入揭示化感作用的机制，是今后化感作用的研究重点。

Maoba books: no books long hair, which means a locked line but did not cover crop of blankcontinuous books.

毛书：不是书本长毛，指锁好线而未上封面裁切的坯书。

The maoba book: no books long hair, which means a locked line but did not cover crop of blankcontinuous books.

毛书：不是书本长毛，指锁好线而未上封面裁切的坯书。

Crop insurance will cover a portion of farm production losses attributable to Hurricane Katrina, the drought and other adverse weather conditions this year.

作物保险将包括飓风"卡特里娜"、干旱及其它不良天气造成的部分农产品损失。

Soil management between rows was with a permanent cover crop of fescue while the tree rows were treated with herbicide in a strip 1 m in width.

土壤管理与一个永久的封面一排排的农作物的果树行间草草地处理除草剂草甘膦1米宽条。

There was no fertilizer application for the mung bean and the mucuna cover crop.

12个处理为完全随机区组设计，3次重复，种植方式为旱稻-花生-绿豆或黎豆，其中绿豆或黎豆不施肥。

The testing results indicate there is a visible regulating effect in soil temperature with crop residue cover.

试验结果表明，残茬覆盖对土壤温度有明显的调节作用，5、10、15、20 cm各层有覆盖相对于无覆盖分别增温1.5~2.1℃、0.9~1.2℃、0.2~0.9、0.4~0.8℃，随着土壤层的加深，覆盖对土壤温度的调节作用越来越小。4月20日至6月15日前后，随着覆盖量的增加，土壤温度开始升高，但覆盖量增加到一定程度后，土壤温度将下降，在6月20日以后，随着覆盖量的增加，土壤温度逐渐降低，其中30%覆盖相对于无覆盖，降低1.1~1.5℃，50%~80%覆盖降低2~3.6℃，而表土层降低幅度最大，沿深度方向幅度越来越小。

BMP production systems will encourage quicker ground cover, more crop residues, greater root growth and more leaf area, all of which will improve N use efficiency and reduce erosion.

最佳管理措施生产体系将有助于迅速覆盖地表，产生较多的作物残留，促进根系生长和增加叶面积，这些都会提高氮素利用率同时降低侵蚀。

They urged "a rapid shift, whenever and wherever conditions permit it, to management systems based on minimal soil disturbance, increased soil cover, and appropriate crop rotation".

他们敦促，"无论何时何地，只要条件许可，应迅速向以最低限度干扰土壤，增加土壤覆被和适当的作物轮作为基础的管理系统转变"。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。