禾本科牧草在生长过程中分蘖多，长势快，抑制杂草的生长，而豆科牧草和菊科牧草苗期长势缓慢，在与杂草杂草竞争中处于劣势。
Grass forages grow fast and have many tillers, which restrained weeds effectly. While leguminous and composite fodder grow slowly which is at disadvantage on competing with weeds during seedling.
加拿大帝国商业银行成功地使用了一种原产于墨西哥的以种子为食的象鼻虫来控制讨厌的帕特农杂草，这种杂草已知会对印度和澳大利亚的农业和人类健康产生负面影响。
CIBC successfully used a seed-feeding weevil, native to Mexico, to control the obnoxious parthenium weed, known to exert devious influence on agriculture and human health in both India and Australia.
尼尔森苦笑着掐断手中杂草的花，把杂草弄死。
As he crumples the flowering end of the weed in his hand, Nelson grimaces.
我们的传统做法是，杂草管理的主要目标是以如何控制杂草为中心的。
Traditionally, the major objective in weed management has centered on how weeds can be controlled.
抗杂草和害虫的庄稼可能会导致生命力更强的杂草和害虫，而这将需要更新更强的化学药品才能杀死它们。
Herbicide-resistant and pesticide-resistant crops could give rise to super-weeds and super-pests that would need newer, stronger chemicals to destroy them.
就像宾夕法尼亚州立大学的杂草专家指出的，weed whackers割草机避免了化学品的使用，也避免了手工清除杂草的劳动。
And, as weed expert Bill Curran at Penn State University points out, they avoid the use of chemicals. Or the labor of pulling weeds by hand.
克伦教授说将杂草堆肥是利用杂草的另一种方法。
Professor Curran says composting weeds is another way to make use of them.
其中，地理位置是草坪杂草分布差异的间接原因，杂草种类的多少及每种杂草的数量与管理水平有直接的关系。
The number of weed species occurred and population size of each weed species depended directly on the management of the turf, whereas the turf location played the secondary effects on the weeds.
传统的耕作方法将通过耕地来减少杂草的生长，但免耕农业选择使用除草剂来消灭杂草，以保护作物。
Conventional tillage controls weed growth by plowing and cultivating, but no-till farming selectively USES herbicides to kill weeds and the remains of the previous crop.
主要杂草是一年生阔叶杂草和禾本科杂草。
约莫过了一年，土桥旧了些，桥边杂草丛生，杂草下，露出一排排像在神社屋檐椽子上见到的那种白色缺口。
About one year later, the bridge gets old surrounded with weeds and exposes white gap. If this continues, the chestnut will decay.
为此，就如何利用机器视觉技术从复杂的土壤背景下分离出植物(作物和杂草)的方法进行研究，从而为杂草的识别做前期准备工作。
This paper will research how to separate plants (crop and weed) from complex roil background by applying machine vision technology, which is a prepared work for identifying weeds.
主要问题是一年生阔叶杂草和禾本科杂草。
杂草入侵的种类和数量取决于放牧强度，在极度退化阶段的杂草入侵种类和数量最多。
The variety and quantity of invasive weeds depend primarily on grazing intensity and are greatest in the extreme degradation stage.
与自生油菜(杂草)相关的问题包括杂草的竞争性、难以控制以及通过对油菜纯系的基因混杂造成油菜品质的下降等等。
The associated problems with this weed include its competitiveness, difficulty of control, and the reduction of quality through genetic contamination of pure lines of rapeseed and the like.
阐明外来杂草的各种入侵机制可以为入侵杂草的预测和控制提供科学依据。
The clarification of the invasive mechanism of exotic weeds will be beneficial to predict and manage on them.
掌握寒地水田杂草发生种类及优势种群，对制定杂草综合治理方案，科学选用化学除草及其配套技术具有指导意义。
Grap the cold-field paddyfield's characteristic and preponderant colony have the directive sense to constitute father's precept of weed, choose chemic weed scientific and its measure.
概述了草坪杂草综合防除的概念、意义、措施以及目前草坪杂草防除上存在的问题。
This paper deals with the conception, significance, measures of integrated weed control in turf and its current problems.
以化学防除适期麦田杂草为研究对象，对利用条播作物的位置和纹理特征识别田间杂草的方法进行了研究。
Take the weeds in wheat fields as the research object, a method of weed detection by using the texture and position features was studied.
在农业植保领域中，杂草识别在机器视觉技术的研究国内外已经取得了部分成果，绝大多数研究都集中在杂草植株的个体上。
On the field of agriculture and plant protection, weed identification technology in machine vision research at home and abroad has made part of the results.
施用除草剂可减少免耕玉米田杂草种类，抑制杂草生物量的增长。
Herbicide could decrease weed species and inhibit biomass growth significantly in non-tillage field.
采用倒置“W”取样法对河北省玉米田杂草进行了调查，以明确田间杂草的种类组成及群落结构。
Weed survey was conducted by sampling methods of inverted W-pattern to determine the species composition and structure of weed communities in maize fields in Hebei Province.
园子里长满了杂草，拔掉这些杂草。
有杂草的枣园，节肢动物各类群的物种数明显高于无杂草的冬园，并且优势种不明显。
The arthropod species and individuals at the jujube yard with weeds were considerably higher than those without weeds.
根据杂草在成熟马尼拉草坪中的巨大危害，阐述了化学除草在草坪杂草防除中的优点；
Because of great harm of weeds to mature Manila lawn, in this paper we explained many virtues of chemical weeding in lawn maintenance and its application.
在杂草的生物防除中，研究和应用得最早且证明效果最好的措施是利用昆虫防除杂草。
In the biological control of weeds, the measure which was first studied and applied, and which has also been proved effective is weed-control by insects.
在杂草的生物防除中，研究和应用得最早且证明效果最好的措施是利用昆虫防除杂草。
In the biological control of weeds, the measure which was first studied and applied, and which has also been proved effective is weed-control by insects.
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