Wheat field weed survey was conducted using an inverted W-pattern with 9 sampling points in the north region of Heilongjiang province.
运用倒置“W”9点取样法，对黑龙江省北部大豆小麦轮作区小麦田做杂草调查。
Evaluation of novel transgenic lines is initially in small-scale field trials, where it is likely that rare events, such as hybridization with weed species, may have insignificant consequences.
新的转基因品种的最初评估是在小规模田间试验中进行的，在此试验条件下，稀有事件例如与杂草种的杂交可能不会产生明显的结果。
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.
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。
Littleseed canary grass is a major weed in wheat field particularly in the rice-wheat cropping system.
草是小麦田的主要杂草，尤其是水稻-小麦复种田块发生较为严重。
The paper discusses the reason and trend of weed community evolution in paddy field.
从农业生产实际出发，对水稻田杂草群落演化原因及其趋势进行了综述。
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.
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。
Application of herbicides to paddy field at Yushanwu was widespread which resulted in less weed species than that at Chengbei.
禹山坞稻田普遍使用化学除草剂，杂草种数明显少于城北村，水竹叶成为禹山坞稻田的优势种；
Field experiments in wheat were conducted to determine broadleaf weed control efficacy of tribenuron plus synergist.
在田间条件下，用苯磺隆加增效剂对麦田阔叶杂草的除草效果进行了试验。
Herbicide could decrease weed species and inhibit biomass growth significantly in non-tillage field.
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。
To control weed in tobacco field more effectively, field experiments were carried out with 3 types of herbicidal film after flue-cured tobacco transplanting.
为更有效地防除烟田杂草，在烤烟移栽大田后采用3种除草膜进行了烟田除草试验。
The effect is obvious on weed control with black film mulched, the fresh weight of weed in field is reduced 70.
利用黑色地膜覆盖防草效果明显 ，田间杂草鲜重比与黑膜同材质的透明地膜覆盖减少 70 。
Every autumn we carefully weed a field of crops and loosen the soil to prevent weeds from growing in it.
每年秋天大家都要认真地芟秋，这样可以防止农田中生长杂草。
In terms of the leaves' shape difference of corn seedling and weed seedling in the field, the approach that used shape feature factors of area and compactness to classify corn and weed was studied.
根据玉米田中玉米和杂草幼苗叶片的形状特征，研究了利用形状特征因子——面积和分散度识别玉米和杂草的方法。
In modern field of chemical weed control, amide herbicides have been occupying an important position.
酰胺类除草剂在近代农田化学除草中一直占据重要地位。
According to the researches on the usage of herbicided in zero tillage corn field, the results showed that thesingle herbicide could be adopted in the field-grown grassy weed.
通过对免耕玉米田不同除草剂使用方法和用量的研究表明，田间若以禾本科杂草为主可用单剂防治，若禾本科杂草和阔叶杂草混生以使用混剂为好，且采用土壤处理法防效最佳。
The phytocidal composite efficiently expands the weed control spectrum and has better control efficiency to the main grassy weed and the broadleaves in the cotton field.
本 除草组合物有效的扩大了杀草谱，对棉花田中的主要禾本科杂草和阔叶杂草均有较好的防效。
The effect of the new kind of concentrated compound fertilizer contained with herbicide on weed control and wheat growth in the wheat field was studied in the basin culture and the plot trials.
通过盆钵栽培和田间小区试验，研究新型高效复配小麦专用除草药肥对麦田杂草防效和小麦生长发育的影响。
When comparing the direction of movement, during the early growing season of rice plants, spider groups mostly moved to the rice paddy field patches from the weed patches.
从时间动态上来看，四种类型廊道的捕食性天敌特征指数的变化趋势相似。
The similarity coefficients of the predatory arthropod communities in the weed habitat and the rice field were over 0.5, indicating many common species of predatory arthropods in the two habitats.
杂草地与稻田两生境间的捕食性节肢动物群落的相似性系数大于0.5，由此可见，这两类生境中捕食性节肢动物的物种组成是非常相似的，具有较多的共有种。
The similarity coefficients of the predatory arthropod communities in the weed habitat and the rice field were over 0.5, indicating many common species of predatory arthropods in the two habitats.
杂草地与稻田两生境间的捕食性节肢动物群落的相似性系数大于0.5，由此可见，这两类生境中捕食性节肢动物的物种组成是非常相似的，具有较多的共有种。
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