杂草防治,weed control
1)weed control杂草防治
英文短句/例句
1.control of weeds in narrow-row soybean窄行栽培大豆的杂草防治
2.Study on the Control Effect of Chemical Herbicide and Different Agricultural Measurement to the Farmland Weeds of Qinghai Highland;化学除草剂及不同农艺措施对青海高原农田杂草防治效果的研究
3.The main practices which lead to these high average yields are pest and weed control, time of planting and fertilizer use.使水稻单产提高的主要措施是病虫害和杂草防治、适时播种和施肥。
4.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
5.The Primary Research of Field Efficacy of New Herbicide HNPC-B4047新除草剂HNPC-B4047防治田间杂草效果初报
6.Study on Weeds Community Structure and Its Control Technique in Tobacco Field;烟田杂草群落结构及其防治技术研究
7.Studies on the Succession of Weed Communities in Paddy Field and Their Control Techniques;稻田杂草群落演替及其防治技术研究
8.Trial on the Efficacy of Fenoxaprop-P-ethyl 6.9% EW on Controlling Weeds in Tobacco Field精噁唑禾草灵6.9%水乳剂防治烟地杂草药效试验
9.Classical biological control of exotic weeds利用传统生物防治控制外来杂草的入侵
10.Symptom of Growth and Prevention and Cure on Weeds of Wheat in Shangqiu;商丘市小麦田杂草发生情况和防治对策
11.Control Effect of Fluoroglycofen-ethyl Emulsion in Water on Broadleaf Weeds in Millet Field“削阔”水乳剂防治谷田阔叶杂草效果研究
12.Synthesis of 3,5-Dibromo-4-Hydroxybenzonitrile and Its Plot Experiments on Controlling the Weeds in Maize Field合成3,5-二溴-4-羟基苯腈防治玉米杂草研究
13.Studies on Controlling Pest and Weeds by Integrated Rice-Duck Farming Technology有机水稻生产稻鸭共作防治杂草、害虫的研究
14.The Investigation and Medicament Prevention of the Advantage Plant of Weed in Turf in Huaibei Area of Anhui Province安徽省淮北地区城市草坪杂草优势种群调查及化学防治
15.Studies on Weed Population Dynamic and Chemical Controlling Techniques in Citrus Orchard at Southwest Zhejiang Hilly Region;浙西南丘陵地柑桔园杂草种群消长动态及化学防治技术研究
16.Experiment in the Rice Field Weed Control by Oxadiazon 12.5% EC12.5%?草酮乳油防除水稻田杂草试验
17.Harm of Lawn Weeds and Research on Biological Control草坪杂草的危害及生物防除研究进展
18.Cloransulam-methyl 84%WG Controlling Destructive Weeds in Soybean Field84%氯酯磺草胺WG防除大豆田恶性杂草
相关短句/例句
prevent weed防治杂草
3)Miscellaneous and poisonous grass prevention and cure毒、杂草防治
4)weed biological control杂草生物防治
5)waterweed control水生杂草防治
6)waterweed control水中杂草防治
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。
