搜索结果: 16-30 共查到“知识库 植物免疫学”相关记录211条 . 查询时间(1.456 秒)
甘肃省的临洮县在大丽花的育种、推广和产业发展方面处于全国领先地位，不但栽培面积广、从业人员多、品种自成体系、产品销往国内外，而且已成为中国国家地理保护产品，是名副其实的中国大丽花生产与销售中心。但近年来，临洮大丽花种植面积锐减、品种丢失严重、产业发展陷入低谷，同时国内其他地方的大丽花产业也面临着同样的问题。笔者通过查阅资料和实地调研，发现导致大丽花产业严重萎缩的原因有：（1）可耕土地与从业人员减少...
番茄青枯病植物疫苗胶悬菌剂的制备及其对病害的防治效果
番茄青枯病 青枯雷尔氏菌 植物疫苗 胶悬剂
2017/10/27
研究了植物疫苗胶悬剂的制备工艺, 确定胶悬剂制备的适宜参数为:琼脂终浓度为2.0‰、氯化钠终浓度为2.0%和pH为7.0。在此条件下, 胶悬效果最好, 质地均匀, 无上下分层。试验了植物疫苗胶悬剂对番茄青枯病的防治效果, 结果表明, 该胶悬剂能较好地抑制番茄青枯病的发生, 其防效(77.45%)与化学农药72%农用硫酸链霉素SP(77.23%)相当, 配合生防菌剂20亿活芽孢/g蜡质芽孢杆菌WP施...
Monitoring of operation loading of three-point linkage during ploughing
tractor plough soil properties
2016/4/5
The research was focused on operational measurements of tractor plough tools and their subsequent utilisation and
simulation under laboratory conditions by a hydrostatic simulator. In this field, th...
Genetic Effects of High Fibre Strength Breeding Lines in Crosses with Transgenic Bt Cotton Cultivars (Gossypium hirsutum L.)
additive dominant model fibre quality heterosis lint yield
2016/4/5
Evaluation of genetic effects in cotton (Gossypium hirsutum L.) high fibre strength lines is necessary for the
genetic improvement of fibre properties. Six breeding lines with high fibre strength an...
Production of Tetraploid Plants of Trollius chinensis Bunge Induced by Colchicine
morphological cytological and fertility characteristics polyploidy induction Trollius chinensis
2016/4/5
Trollius chinensis Bunge is one of the important ornamental and medicinal plants cultivated in China. In this
study, the tetraploid plants of Trollius chinensis were successfully induced by colchici...
研究了苏云金芽孢杆菌Bacillus thuringiensis HBF-1菌株对10日龄铜绿丽金龟Anomala corpulenta和黄褐丽金龟A.exoleta幼虫存活率、拒食、抑制生长及取食选择性的影响。结果表明,随着感染剂量的增大和感染时间的延长,两种金龟子幼虫的存活率均下降,对铜绿丽金龟幼虫的拒食作用和生长抑制作用增强,使该幼虫对饲料的选择性增强。感染7 d时,对黄褐丽金龟幼虫的LC5...
大豆疫霉根腐病抗性研究进展
大豆 Phytophthora sojae 疫霉根腐病 抗病性 抗性位点基因
2016/7/22
大豆疫霉根腐病由卵菌大豆疫霉菌（Phytophthora sojae）侵染引起，是一种大豆生产上危害非常严重的病害。大豆对疫霉菌的抗性表现有2种，一种是由单位点显性基因Rps控制的完全抗性，对大豆疫霉菌小种具有特异性，另一种为多基因控制的部分抗性，由数量性状位点控制，对所有大豆疫霉菌小种具有广谱抗性。迄今已定位、鉴定了26个单位点Rps基因，分别分布在第2（1个）、3（12个）、10（1个）、...
Delayed Glyphosate Application for No-Till Fallow in the Driest Region of the Inland Pacific Northwest
Low precipitation zone plant competition soil water storage
2015/12/23
Farmers typically use three applications of glyphosate to control weeds in no-till fallow. Some are now
experimenting with an unconventional modification to this widely used approach. This modi...
Upgrading the RIM Model for Improved Support of Integrated Weed Management Extension Efforts in Cropping Systems
Adoption agriculture bioeconomics decision support system
2015/12/23
RIM, or ‘‘Ryegrass Integrated Management,’’ is a user-friendly weed management software that
integrates long-term economics. As a model-based decision support system, RIM enables users to
easily bui...
Overcoming Weed Management Challenges in Cover Crop–Based Organic Rotational No-Till Soybean Production in the Eastern United States
Reduced-tillage organic
2015/12/23
Cover crop–based organic rotational no-till soybean production has attracted attention from farmers, researchers, and other
agricultural professionals because of the ability of this new system to enh...
Extreme Grain-Based Cropping Systems: When Herbicide-Free Weed Management Meets Conservation Tillage in Northern Climates
Blade roller fl exible crop production syste low-input cropping system
2015/12/23
The challenges associated with the adoption of conservation tillage and/or low-input cropping systems, whether organic or
herbicide-free, across Canada are shaped by scale, environment, and local pra...
Light-Activated, Sensor-Controlled Sprayer Provides Effective Postemergence Control of Broadleaf Weeds in Fallow
Chemical fallow herbicide efficacy herbicide resistance synthetic auxins winter wheat
2015/12/23
A study was conducted in summer fallow fields near Davenport, WA, and Pendleton, OR, in 2007 and 2008 to evaluate the
POST weed control efficacy of herbicide treatments applied with a light-activated...
Assessing and Visualizing Agricultural Management Practices: A Multivariable Hands-On Approach for Education and Extension
Active learning cover crops ecosystem services multivariate multifunctional participatory spider plots
2015/12/23
Agroecosystems are inherently complex, and practices aimed at managing one component of the system can have
unintended consequences for other components of the system. Management decisions, therefore...
Weed-Competitive Ability of Spring and Winter Cereals in the Northern Great Plains
Crop rotation cultural weed control integrated weed management wheat barley
2015/12/23
The inclusion of winter cereals in spring-annual rotations in the northern Great Plains may reduce weed populations and
herbicide requirements. A broad range of spring and winter cereals were compare...
nfluence of atracurium on selected cardiovascular and respiratory variables and surgical times in dogs undergoing laparoscopic ovariectomy with a standardised ventilation pattern
bitch capnoperitoneum spaying relaxation
2015/5/25
Respiratory and cardiovascular changes in normocapnic dogs undergoing laparoscopic ovariectomy
are described in this report. To-date, changes during a standardised ventilation pattern, irrespective ...