1)Weed[英][wi:d][美][wid]杂草
1.Application of Weeds in the Remediation of Soils Contaminated by Heavy Metals;杂草在土壤重金属污染修复中的应用
2.On absorption and accumulation of six heavy metal elements of weeds in Jinhua suburb (Ⅱ)-PCA on relationship between weeds and soil in metal element content;金华市郊杂草对土壤重金属元素的吸收与富集作用(Ⅱ)-杂草-土壤间重金属元素关系的主成分分析
3.Identification of crop and weed in seedling stage based on multi-spectral images;应用多光谱数字图像识别苗期作物与杂草
英文短句/例句
1.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。
2.A weedy lawn.一个长满杂草的草坪
3.annual weedy grass used for hay.一年生杂草用作干草。
4.a mat of weeds, hair, threads一团杂草、 毛发、 线.
5.a wanton growth of weeds杂草的丛生 [茂密]
6.(of land)full of or likely to produce many weeds（指土地）长满杂草的,易生杂草的
7.The garden is overgrown with weeds.Get the weeds up.园子里长满了杂草，拔掉这些杂草。
8.a European forage grass grown for hay; a naturalized weed in United States.欧洲草料草，用作干草；已经引入美国的杂草。
9.Study on Prevention and Cure Weeds of Using Chemical-Herbicide for Poa Pratnsis L.;化学除草剂对草地早熟禾草坪防治杂草的研究
10.Let's pulled out all the weeds.咱们把杂草都拔掉。
11.eliminating trouble some weeds消灭难以根除的杂草
12.low-growing weedy grass with spikelets along the leaf stems.矮杂草，沿叶柄长有小穗。
13.free of weeds, contamination, pollution, etc无杂草、 传染、 污染等.
14.rank grass, ivy, etc蔓生的杂草、 常春藤等
15.hoeing the lettuces锄去生菜周围的杂草.
16.eliminating ill weeds消灭危害性大的杂草
17.If the brain sows not corn, it plants thistle .脑里不种粮，必定生杂草。
18.Weed Science Society for Eastern Africa东非杂草科学研究学会
相关短句/例句
weeds[英][wi:d][美][wid]杂草
1.Study on control weeds growing in the Dichondra repens lawn during spring by different combination of chemicals in the southwest region of hunan province;湘西南地区马蹄金草坪中春季杂草的化学防除试验
2.Efficacy Experiment of 10.8% HKUST Green Quizalofop-p-ethy EC Against Soybean Field Weeds;科大绿野10.8%精喹禾灵乳油防除大豆田杂草试验
3.The Experiment of Herbicides against Weeds of Trifolium repens L. in seedling period;几种除草剂防治白花三叶草苗期杂草试验
3)weed species杂草
1.The contents of four heavy metal elements including Cu, Pb, Zn and Ni in 30 weed species collected from the sewage area near a smeltery were determined and analyzed.对冶炼厂周围的土壤和杂草中的4种重金属元素含量进行测定和统计。
2.In view of that Cd-Pb-Cu-Zn combined pollution of hyperaccumulated plant in phytoremediation is short of research at present, block test was first adopted to study their accumulative characteristics in 22 weed species of 12 families in Shenyang district.首次采用小区试验方法,对沈阳地区12科22种田间杂草植物进行其积累特性的初步研究。
3.Accumulative characteristics of heavy metals ( Cd, Pb, Cu and Zn) in 31 weed species belonging to 17 families which survived in a Pb.针对目前植物修复中Cd-Pb-Cu-Zn复合污染的超富集植物缺乏研究,采用野外采样系统分析方法,对青城子铅锌矿各主要坑口周围17科31种杂草植物进行其积累特性的初步研究。
4)weed control杂草
1.Talking on the weed control by medicament on Dike;堤防杂草药物防除方法浅谈
2.Effect of spraying wettable powder of 50% napropamide on weed control of tobacco field;50%敌草胺可湿性粉剂防除烟地杂草的效果
5)Turf weed草坪杂草
1.Occurrence characteristics of turf weeds under different management levels in temperate semi-arid region.;温带半干旱地区不同管理水平下草坪杂草发生特征的比较研究
2.Through investigation, there are 82 species turf weeds in three different management level lawn community including species.由于管理水平和建植时间的不同，草坪杂草发生动态可划分为以下几个阶段：(1)一年生杂草占优势的草坪杂草阶段；(2)多年生阔叶杂草占优势的草坪杂草阶段；(3)多年生阔叶杂草和一年生恶性杂草交替占优势的草坪杂草阶段；(4)具根茎的多年生禾草和一年生恶性杂草交替占优势的草坪杂草阶段；(5)具根茎的多年生禾草和多年生阔叶杂草占优势的草坪杂草阶段。
6)lawn weeds草坪杂草
1.The progress of study on lawn weeds chemical control;草坪杂草化学防除的研究进展
2.Through investigation and analysis,the lawn weeds was studied in Xinyang city.对河南省信阳市草坪杂草进行了比较详细的调查,结果表明:信阳市草坪杂草共132种,分属32个科,其优势种为以菊科和禾本科为主的18科33种杂草,并提出了一些防除草坪杂草的措施和建议。
延伸阅读
杂草杂草weed目的作物以外的，妨碍和干扰人类生产和生活环境的各种植物类群。主要为草本植物，也包括部分小灌木、蕨类及藻类。全世界约有杂草8000种，与农业生产有关的主要只有250种。中国约有杂草119科1200种。除可按植物学方法分类外还可按其对水分的适应性分为水生、沼生、湿生和旱生，按化学防除的需要分为禾草、莎草和阔叶草，此外还可根据杂草的营养类型、生长习性和繁殖方式等进行分类。其生物学特性表现为：传播方式多，繁殖与再生力强，生活周期一般都比作物短，成熟的种子随熟随落，抗逆性强，光合作用效益高等。农田杂草的主要为害为：与作物争夺养料、水分、阳光和空间，妨碍田间通风透光，增加局部气候温度，有些则是病虫中间寄主，促进病虫害发生；寄生性杂草直接从作物体内吸收养分，从而降低作物的产量和品质。此外，有的杂草的种子或花粉含有毒素，能使人畜中毒。防除杂草的方法有：①植物检疫。对国内外各地区间调运的种子和苗木进行检查处理，防止新的外来杂草传播。②人工除草。③机械除草。④物理除草。用水、光、热等物理因子除草。⑤化学除草。用除草剂除草而不伤害作物。其选择性是根据除草剂对作物、杂草的高矮和根系深浅不同的“位差”、种子萌发先后和生育期不同的时差、植物组织结构、形态及其抗药性的差异等特性而实现。⑥生物除草、利用昆虫、禽畜、病原微生物和竞争力强的置换植物及其代谢产物防除杂草。⑦生态除草。即创造有利于作物生长而不利于杂草繁生的生态环境除草。⑧综合防除。运用各种措施间的互补和协调作用，高效而稳定防除杂草。
