To learn the toxicity and safety of the biological crop protective agent.

目的了解生物农药庄稼保护剂的毒性和安全性。

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The protective cultivation, which is relative to traditional cultivation, is a new cultivation technique which combines with crop straw incorporated into field, no-tillage and reduced tillage.

保护性耕作是相对于传统耕作的一种新的耕作技术，是作物茎秆还田和免耕、少耕技术的结合。

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Glyphosate is a nonselective herbicide, it can eradicate many weeds and safety for cane crop by using protective shield during spraying.

草甘膦是灭生性除草剂。使用时采用防护措施定向喷施，就能达到有选择地灭除杂草而对作物安全的目的。

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With domestic sugar producers deprived of this profitable and protective tool, external producers might be able to sell more of their crop here, and with the profits buy US equipment or goods in return.

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