農(nóng)業(yè)專業(yè)英語知識(已修改)
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【正文】 Lesson 5 Agronomic Management Practices Affecting Tobacco QualityNew Words amp。 ExpressionsBuyout n. a situation in which a person or group gains control of a pany by buying all of its shares 全部買下、買斷 Postbuyout 買斷后MH maleic hydrazide 順丁烯二酸酰肼，馬來酰肼Alkaloids n. any of numerous organic bases (as morphine) containing nitrogen and usually oxygen that occur especially in seed plants 生物堿Top v. to remove or cut the top of 給……打頂Sucker n. a shoot from the lower part of the stem of a plant 腋芽Stalk n. a long narrow part of a plant supporting one or more leaves,flowers or fruits 柄、梗Nicotine n. a poisonous alkaloid （C10H14N2） that is the chief active material of tobacco and is used as an insecticide 尼古丁Cure v. to preserve by drying it 曬、烘烤Mature a. fully grown and developed 成熟的Hornworm n. a kind of insects 天蛾幼蟲Mo(u)ld n. a superficial growth produced especially on damp or decaying organic matter or on living organisms 霉菌Blue mo(u)ld 青霉病Layby n. the final operation in the growing of a field crop 最后的田間作業(yè)Variegated v. marked in different colored spots,lines,areas etc 雜色的、斑駁的Sidedress v. to apply nutrients on one side of the plant roots 側(cè)施肥Nondescript a. belonging to no particular class or kind 無歸類的。 not easily described 難以形容的Suckercide n. chemical product that prevents sucker from growing 腋芽抑制劑Contacts n. chemicals that kill insects by contacting them directly觸殺劑Systemics n. a pesticide that as used is harmless to the plant, but when absorbed into its sap makes the entire organism toxic to pests 內(nèi)吸劑Versus prep. Against。 in contrast to 對、和……相比Priming n. picking up 采收，采摘Burley n. a thinbodied aircured tobacco grown mainly in Kentucky白肋煙 TextIn 2005, tobacco will be produced and marketed without price support for the first time since 1939. Price schedules will reflect an emphasis on quality, with deep discounts for unripe and immature grades. In the postbuyout environment, profitability will be directly related to the marketing of quality tobacco produced at the lowest cost. A number of management practices affect tobacco quality. Some of the most important are as follows: 在2005年，煙草將自1939年以來第一次在沒有價(jià)格支持下生產(chǎn)和銷售。價(jià)格表將反映對煙葉質(zhì)量的重視，未熟等級將大幅降價(jià)。在后煙草配額買斷的環(huán)境下，利潤將直接與以最低成本生產(chǎn)的優(yōu)質(zhì)煙草的銷售相關(guān)。 很多農(nóng)藝措施影響煙草的質(zhì)量，最重要的一些措施有：? Nitrogen rate and time of application ? Topping and sucker control with minimal MH residues? Harvest rate and ripeness? Leaf separation by stalk position●氮肥的施用量和施用時(shí)間 ●打頂和最少馬來酰肼殘留的腋芽控制 ●采收速率和成熟度 ●葉片分部位采收Nitrogen Rate and Time of ApplicationNitrogen is the most
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