一年生杂草,annual weeds
1)annual weeds一年生杂草
1.Field trials showed that 25% pyrazosulfuron- mefenacet- ethyl EB 185￣370g/667m2 could control theannual weeds in rice fields such as barnyardgrass, difformed galingale and so on.吡嘧泡腾片剂185￣370g/667m2能有效防除水稻移栽田稗草、异型莎草等一年生杂草,药后28d对稗草、异型莎草的株防效和鲜重防效均在90%以上。
2.0kg/hm 2,it affects a little for the growth of the potatoes and it can prevent and get rid of theannual weeds like Digitaria sanguinal, Setaria viridis, Echinochloa crusgali,Amaranthus retroflexus,Chenopdium album and so on.0kg/hm2 范围内 ,对马铃薯的生长发育影响较小 ,可有效地防除马唐、狗尾草、稗草、反枝苋、藜等一年生杂草。
3.It had good prevention and elimination effect onannual weeds in corn field at the recommended dosage.8%,对一年生杂草防效显著。
英文短句/例句
1.annual weedy grass used for hay.一年生杂草用作干草。
2.annual wiry-stemmed North American weed with minute scalelike leaves and small yellow flowers.北美的一种一年生杂草，茎铁丝状，叶
3.weedy plant of southeastern United States having divided leaves and long clusters of greenish flowers.一种一年生杂草，叶多裂，花序疏散而伸长。
4.weedy European annual with yellow flowers; naturalized in United States.欧洲的一种一年生杂草，开黄花；已移植入美国。
5.weedy annual native to Europe but widely distributed as a weed especially in wheat.原产于欧洲的一年生杂草，麦田里的分布广泛。
6.Control Effect of S-metolachlor on Annual Weeds in Sunflower Field金都尔防除向日葵田一年生杂草试验示范
7.Coal was effective on annual weeds with grade over 8 in 70 DAT.果尔对一年生杂草的除草效果在处理后70天达8级以上。
8.weedy annual grass often occurs in grainfields and other cultivated land; seeds sometimes considered poisonous.一年生杂草，多见于粮田和其他耕地；种子有时被认为有毒。
9.Annual broadleaf and grass weeds are major problems.主要杂草是一年生阔叶杂草和禾本科杂草。
10.small genus of Old World weedy prostrate annuals: knawel.旧大陆一个一年生植物小属，杂草状，匍匐；线球草。
11.a coarse annual panic grass; a cosmopolitan weed; occasionally used for hay or grazing.粗糙的一年生黍；广域的杂草；有时用作干草或牧草。
12.European annual grass often found as a weed in waste ground especially along roadsides and hedgerows.欧洲一年生草，在荒地尤其是路边和灌木树篱常见的一种杂草。
13.The most prevalent weeds around recently planted trees are usually grass and annual broadleaved weeds.在新栽植的幼树周围，长得最多的杂草通常是牧草和一年生阔叶杂草。
14.two species of coarse annual foxtails that are naturalized weeds in United States.两种低质一年生狗尾草属植物，是已经进入美国的杂草。
mon European perennial naturalized worldwide; a troublesome weed.普通欧洲多年生草，遍布世界各地；一种棘手的杂草。
16.coarse annual grass having fingerlike spikes of flowers; native to Old World tropics; a naturalized weed elsewhere.粗糙一年生草本具有手指状花穗；属旧域热带植物；广部杂草。
17.The Study of Interspecific Relationship and the Characteristics of Weed Community of the Mixed Cropping Annual Artificial Grassland in the up Stream of Shiyang River;石羊河上游一年生人工草地种间关系及杂草群落动态研究
18.annual or perennial grasses including decorative and meadow species as well as notorious agricultural weeds.一个一年或多年生禾本属，包括装饰性和草坪用草品种和声名狼藉的农业杂草。
相关短句/例句
annual weed一年生杂草
3)annual broadleaf weeds一年生阔叶杂草
1.Field efficacy trials indicated that fluroxypyr-methyl 200 g/L EC showed a good control effect againstannual broadleaf weeds in wheat field at 750 to 1 050 mL/hm2.田间试验结果表明,200g/L氯氟吡氧乙酸乳油750～1050mL/hm2能有效地防除小麦田一年生阔叶杂草。
4)essential bunch grasses主要一年生杂草
5)annual weed stage年杂草期;一年生杂草阶段
6)annual gramineous weeds一年生禾本科杂草
延伸阅读
一年生杂草分子式：CAS号：性质：在生活史中只开花结实一次，种子繁殖，整个生命周期不到一年时间完成。大田中最常见的杂草是一年生的，分为夏季一年生和冬季一年生两类。夏季一年生杂草在春季发芽，夏季是主要发育阶段，秋季成熟后死亡。它们的种子在土壤中维持休眠状态到次年春季，如藜(Chenopodium album L.)、稗草[Echinochloa crul-galli (L.)Beauv]、马唐[Digitaria sanguinalis(L.)Scop]、苋(A-maranthus viridis L.)、苍耳(Xanthium stramarium L.)等杂草。冬季一年生杂草在秋季或冬季发芽，种子一般在翌年春季或早夏植物死亡前成熟。种子常常在土壤中保持休眠状态越夏，如繁缕[Stellaria media(L.)Cyr]雀麦(Bromus mollis L.)、麦仙翁(Agrostemma githago L.)等杂草。
