Comparison of Three Single-Nozzle Operator-Carried Spray Applicators for Whitefly (<i>

来源 :农业科学(英文) | 被引量 : 0次 | 上传用户:uirerhj
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
Whiteflies cause problems in vegetable production on a global scale. The primary worldwide whitefly pest is Bemisia tabaci (Gennadius). Insecticides are commonly used to mitigate the whitefly problem in vegetable crops. In limited-resource crop production
其他文献
The paper assesses the existing gender policy document in fourteen (14) selected agricultural faculties and colleges in tertiary institutions in Africa. This pa
口服用药是临床最常见的给药方法。为充分发挥药物疗效,护士在具体执行这一操作中有着举足轻重的作用。现将口服用药患者的护理要点介绍如下:
为探究城市道路路侧机动车排放污染物浓度的变化,采用可以实测CO,SO2,NO2,NO,PM10,PM2.5等6种污染物浓度的高精度可移动式路侧空气质量监测仪,选取上海典型城市道路进行实地测量,同时记录路段交通量数据。挑选气象条件相近的数据进行分析,发现路侧空气污染物浓度的5分钟均值与当量小汽车交通量5分钟均值有非常显著的相关性。此外,本研究还分别对不同污染物浓度的时变性与轻型车、重型车的流量做了相
目的探讨心理干预辅助治疗在慢性咽炎患者中应用效果。方法慢性咽炎且心理亚健康患者66例,随机分为对照组和实验组,各33例。2组均常规治疗和健康指导,实验组同时实施心理干预。
The protein intake of the population in the Yucatan Peninsula is based upon the different forms of beans naturally developed. The different ecotypes of creole b
Lettuce (Lactuca sativa L.) is one of the leading vegetables produced by farmers in the Itabaiana region, and thus it is important to study means of sustainable
The production in the EU of the oilseeds, rapeseed and sunflower, has increased dramatically over the last 20 years. Much of the oil produced after crushing is
Understanding the level of drought tolerance of the varieties available in each country is of paramount importance for breeding common bean for drought adaptati
目的探讨老年人慢性根尖周炎的治疗效果。方法55例慢性根尖周炎老年患者(60颗患牙)接受治疗,设为老年组,以同期治疗的40例青壮年人(46颗患牙)作为对照组,对比2组治疗效果。结果1年后
Togolese agriculture is predominantly rain-fed and hence fundamentally dependent on the vagaries of weather. Thus, it is negatively affected by climate change.