weed infestation

用法例句

Study on allelopathic effects of the invasive plant annual fleabane;

入侵杂草一年蓬的化感作用研究

Under natural condition,the invasive plants formed superiority community easily,so it had a bigger potention of harmf.

用外来入侵杂草地上部分及根系不同浓度提取液对多年生黑麦草种子进行室内萌发培养实验,分别测定种子最终萌发率、根长及苗高来研究这些杂草是否对多年生黑麦草萌发及幼苗生长存在化感作用。

Effects of microorganisms on the allelopathy of three invasive weeds

微生物对三种入侵杂草化感作用的影响

The survivorship the ragweed leafbeetle,Ophraella communa,larvae feeding on different leaves(representing the extent of tenderness) of the alien invasive weed,Ambrosia artemisiifolia,was observed.

对入侵杂草豚草的天敌昆虫——外来广聚萤叶甲幼虫取食豚草不同部位叶片后的存活情况进行了观察;对不同日龄幼虫和成虫的生长速率和食物利用效率进行了测定。

During May to July, 2006 and April to May, 2007, we studied pollination biology in Ipomoea cairica, an invasive weed in Guangdong Province, China.

五爪金龙(Ipomoea cairica)是一种匍匐或攀援生长的入侵杂草。

Effects of species richness on weed invasion in an artificial grassland ecosystem in eastern Tibetan Plateau

青藏高原东缘人工草地群落物种丰富度对杂草入侵的影响

An invasive weed optimization algorithm for constrained engineering design problems

一种约束工程设计问题的入侵性杂草优化算法(英文)

Sichuan province is one of the most serious districts influenced by invasive alien weeds in China.

四川省农科院植保所等单位于1985~1987年间及2002~2006年间不完全调查,共发现外来入侵杂草63种,隶属21科,其中水生杂草2科2种(空心莲子草、凤眼莲),陆生杂草20科62种(含水陆两栖杂草1种,即空心莲子草)。

The Study of the Cell Structure in the Secondary Xylem in Three Invasive Plant Varities

3种入侵杂草次生木质部的细胞结构

Ecophysiological Mechanisms of Competition between Invasive Weed Ageratina Adenophora (Asteraceae) and Non-invasive Herbaceous Plants;

入侵杂草紫茎泽兰与非入侵草本植物竞争的生理生态机理研究

Allelopathy and utilization of alien invasive weeds in turf

草坪中外来入侵杂草的化感作用及其利用

Simulating Ecological Characters of Exotic Weeds

入侵杂草化感作用及其生态特性的模拟研究

Analysis of the Allelopathic Effects of Yellow-top Weed (Flaveria Bidentis) on Wheat Plant;

外来入侵杂草黄顶菊对小麦的化感作用分析

Predicting the Potential Distribution of Invasive Alien Weeds in China;

几种外来入侵杂草在我国的潜在分布预测

Effects of microorganisms on the allelopathy of three invasive weeds

微生物对三种入侵杂草化感作用的影响

Preliminary studies on breeding system of invasive weed Ipomoea cairica L.

入侵杂草五爪金龙有性繁育系统的初步研究

Allelopathy of External Invasive Weeds to the Local Capsicum annuum L.in Qiannan

外来入侵杂草对黔南土著辣椒的化感作用

Effect of Alternanthera philoxeroides,an invasive exotic weed,on plant biodiversity.

外来入侵杂草空心莲子草对植物生物多样性的影响

COMPARISON OF BASIC PHOTOSYNTHETIC CHARACTERISTICS BETWEEN EXOTIC INVADER WEED MIKANIA MICRANTHA AND ITS COMPANION SPECIES

外来入侵杂草薇甘菊及其伴生种基本光合特性的比较

Studies on the Effects of an Invasive Grass Named Alternanthera Philoxeroides on the Local Insect Named Cassida Piperata Hope

入侵杂草水花生对本地昆虫虾钳菜披龟甲的影响研究

Effects of Soil Nutrition on Relative Competitive Ability of Seedling Eupatorium Adenophorum, an Alien Invasive Weed, and Ryegrass, Lolium Perenne;

土壤营养对入侵杂草紫茎泽兰与替代植物黑麦草苗期竞争力的影响

Research on the Interaction between the Spring Wheat under the Invasion of Weeds and Weeds

杂草入侵下春小麦与杂草的相互作用和影响

Classical biological control of exotic weeds

利用传统生物防治控制外来杂草的入侵

Effects of species richness on weed invasion in an artificial grassland ecosystem in eastern Tibetan Plateau

青藏高原东缘人工草地群落物种丰富度对杂草入侵的影响

Preventive control includes all measures taken to prevent the introduction and spread of weeds.

预防性控制包括所有阻止杂草侵入和蔓延的措施。

Studies on Alien Invasive Weeds in Lishui and Their Occurrence in Fields of Vegetable Crops;

入侵浙江丽水的外来杂草及其在蔬菜地发生规律的研究