weed control

weed control的基本解释

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杂草控制, 除草

与weed control相关的网络例句 [注：此内容来源于网络，仅供参考]

The managing technique of weed control in the utilized first field was established by using Pendimethalin combiningwith shallow intertilling and raining after germinating, artificial control for weeds that still survive and germinate was carried on once or twice, and other perennial weeds and Convolvulus arvensis were sprayed Butoxone along the alfalfa line.

利用一年种子田综合防除措施为：在苜蓿返青后，喷施土壤处理剂施田补，并在一周内浅中耕混土以防治一年生杂草，对仍存活杂草和后期出现的杂草进行人工除草一至二次；在苜蓿后期和收割后，可沿苜蓿行间喷洒2，4-D丁酯，以杀除田旋花及其他阔叶多年生杂草。

The results showed that Sigma Broad had a good control of Veronica didyma, Avena fatra, Vicia sativa, Galium aparine.and Rorippa indica., more significant in term of fresh weight control and the inhibition rate of weed height despite less weed control in term of plant number,which maintained a certain number of weeds,due to delayed use.

结果表明，阔世玛对小麦田婆婆纳、野燕麦、大巢菜、猪殃殃、野油菜等单双子叶杂草有较好的防除效果，春季晚用，对杂草的密度防效不佳，小麦田间保留了一定数量的杂草，但对杂草的鲜重防效、株高抑制率显著。

The main achievements of the project are as follows: 1 the hypothesis that a decrease in seed mass causes an increase in mean dispersal distance has been tested based on the experiments of weed dispersal by wind. The experimental results partly support the hypothesis. The results will help farmers to make an optimal strategy of weed control; 2 a statistic method for inferring probabilistic distribution function of a random variable has been developed, by which probabilistic distribution functions of weed species dispersal have been determined; 3 the reproduction structure of Bromus sterilis has been studied; 4 a more complex CA model with 25 neighborhood cells were built, which can simulate spread of a weed population. This work promotes developments in both theory and application of CA models; 5 the "mean law" in weed control has been proposed. Accordingly, the algorism of patch spring may be calibrated; 6 the "patch" and "true patch" have been mathematically defined so that herbicide can be efficiently applied; 7 simulation validates that initial configurations of weed will affect dispersal of its population and strategies of controlling it, or its distribution patterns affect its dispersal progresses.

主要完成的工作和取得的成果有：1）用实验证实了重量较轻的杂草种子并不一定飞得比较重的远，其结果有助于农民制订杂草的优化控制策略；2）发展了一种推断随机变量分布函数的统计方法并用它来获得了几个杂草种的扩散分布函数；3）对杂草Bromus sterilis的繁殖结构进行了研究；4）建立了一个具有25邻的较复杂的能模拟杂草扩散的CA模型，并在理论和应用方面促进了CA模型的发展；5）在杂草控制方面提出了&平均法则&，据此可对按块施药方法进行校正；6）精确地定义了&块&和&真块&以便在杂草控制中能更有效地使用除草剂；7）模拟证实杂草种群的初始配置影响其扩散和控制策略，或者格局影响过程。

与weed control相关的网络解释 [注：此内容来源于网络，仅供参考]

weed eradication：消除杂草,除莠

weed control 杂草防除,除草 | weed eradication 消除杂草,除莠 | weed killer 除草剂,除莠剂

weed infestation：杂草丛生

weed control 杂草防除 | weed infestation 杂草丛生 | weed killer 除莠剂

weed-cutting blade：除草锄铲

weed-control method ==> 杂草防除法 | weed-cutting blade ==> 除草锄铲 | weed-cutting launch ==> 割草船