共查询到20条相似文献，搜索用时 62 毫秒
1.
双条杉天牛Semanotus bifasciatus(Motschulsky)是柏科树木最严重的钻蛀性害虫之一。开发双条杉天牛的人工饲料是开展该害虫防治技术研究及生物学相关基础研究的重要条件。本研究在参考了其他天牛人工饲料配方的基础上,采用正交试验设计方法设计饲料配方,通过对不同配方饲料对双条杉天牛幼虫的饲养效果进行比较和极差分析,最终筛选出双条杉天牛幼虫的人工饲料最优组合为:琼脂4.7%、蔗糖3.5%、对-羟基苯甲酸甲酯0.5%、酵母粉3.1%、柏树木粉30%、抗坏血酸0.5%以及水。使用该人工饲料可将双条杉天牛幼虫成功喂养至羽化,并且蛹羽化率高达81.25%,总成活率为54.16%。本研究的结果可为天牛科其他天牛人工饲料的开发提供借鉴。 相似文献
2.
Botanical insecticides: for richer, for poorer 总被引：2，自引：0，他引：2
Isman MB 《Pest management science》2008,64(1):8-11
Botanical insecticides presently play only a minor role in insect pest management and crop protection; increasingly stringent regulatory requirements in many jurisdictions have prevented all but a handful of botanical products from reaching the marketplace in North America and Europe in the past 20 years. Nonetheless, the regulatory environment and public health needs are creating opportunities for the use of botanicals in industrialized countries in situations where human and animal health are foremost--for pest control in and around homes and gardens, in commercial kitchens and food storage facilities and on companion animals. Botanicals may also find favour in organic food production, both in the field and in controlled environments. In this review it is argued that the greatest benefits from botanicals might be achieved in developing countries, where human pesticide poisonings are most prevalent. Recent studies in Africa suggest that extracts of locally available plants can be effective as crop protectants, either used alone or in mixtures with conventional insecticides at reduced rates. These studies suggest that indigenous knowledge and traditional practice can make valuable contributions to domestic food production in countries where strict enforcement of pesticide regulations is impractical. 相似文献
3.
4.
Alan B. Hadaway Fred Barlow Christopher R. Turner Leonard S. Flower 《Pest management science》1977,8(2):172-176
Tests to evaluate candidate insecticides and formulations for tsetse control are described, and some data are presented to indicate that some new synthetic pyrethroids (e.g. permethrin and NRDC 161) are effective for a long period at such extremely low doses that they could have a pronounced influence on future tsetse control operations. 相似文献
5.
A. MYLLYMKI 《EPPO Bulletin》1983,13(2):177-182
Models for forecasting outbreaks of harmful Microtines are discussed in terms of the three most important types of rodent damage to agriculture and forestry in the European part of EPPO region: problems to field crops by Microtus arvalis and related species, to horticulture and forestry by M. agrestis and some other species, and injury to the underground parts of various crops by Arvicola terrestris. Two models were developed in parallel but independently for M. arvalis, one in the USSR, the other in France; the former approach included M. socialis. A joint Scandinavian project resulted in models for M, agrestis and Clethrionomys glareolus: the outcome is exemplified by the former case and a few comments are given on other types of model development. The probable mechanism of climatic influence through the food chain on the population dynamics of Microtine rodents is discussed and it is concluded that climatic models are a useful tool in planning rodent control strategies. The role of the EPPO Working Party on Field Rodents as a coordinating body in the development of rodent forecasts is also reviewed. 相似文献
6.
The leaching model PESTRAS was used to estimate sorption and degradation values for bentazone from three lysimeter datasets using the inverse modelling package PEST. Investigations were undertaken to assess the influence on calibration results of (1) values attributed to uncertain parameters not included in the calibration, and (2) starting values supplied to the inverse modelling package. Automatic calibrations with different realistic values for the Freundlich exponent n(f) yielded different combinations of K(om) and DT50. Similarly, the supply of different starting values for K(om) and DT50 revealed that different combinations of these two parameters equally calibrated PESTRAS for two of the three lysimeters. Examination of the error surface, ie the forward running of the model for different combinations of K(om) and DT50 values, and the calculation of the goodness-of-fit to the experimental data, was found useful for identifying those instances where non-uniqueness in the calibration is likely to occur. Although the derivation of sorption and degradation values through inverse modelling is expected to offer significant benefits over laboratory determinations, care should be exercised when examining values derived through this approach. Research is needed to identify data requirements for robust estimation of sorption and degradation parameters through calibration of pesticide fate models against leaching data. 相似文献
7.
8.
9.
10.
11.
《干旱区科学》2012,(2):230-232
<正>Journal of Arid Land(JAL)is an international journal for research in the natural sciences,sponsored by both the Xinjiang Institute of Ecology and Geography and Science Press,Chinese Academy of Sciences.It is published quarterly by Science Press,in the final month of each quarter. 相似文献
12.
《Integrated Pest Management Reviews》2000,5(4):315-319
Instructions for Authors
Instructions for Authors 相似文献13.
14.
15.
《Arid Land Research and Management》2013,27(4):491-493
The use of data gained from monitoring vegetation and soil parameters to enhance the ecological and economic efficacy of range livestock enterprises is not a new concept. I have been involved in several applications of rangeland monitoring to enhance the quality of rangeland environments and to preserve range livestock production as a proper and economically effective means of using such environments. 相似文献
16.
Instructions for Authors
Instruction for Authors 相似文献17.
18.
19.
顶孢霉Ahy1菌株孢子乳悬剂的配方筛选 总被引：1，自引：0，他引：1
采用室内生物测定的方法,从7种食用油,5种乳化剂,5种紫外保护剂和3种抗生素中筛选适合于顶孢霉Ahy1分生孢子粉乳悬剂的助剂配方。结果表明,姜油与顶孢霉Ahy1分生孢子粉混合贮130 d,分生孢子的萌发率最高,对孢子的生物活性无明显影响。在乳化剂、紫外保护剂和抗生素的筛选中, 综合与Ahy1分生孢子粉的湿润力和生物相容性,选择吐温〖CD*2〗80与OP〖CD*2〗10的混剂为Ahy1孢子悬浮剂的乳化剂,十二烷基硫酸钠为湿润剂,腐植酸为紫外保护剂,硫酸链霉素为抗生素。以上助剂与顶孢霉孢子粉均有良好的生物相容性。 相似文献
20.
ABSTRACT Ordinal qualitative data are often collected for phenotypical measurements in plant pathology and other biological sciences. Statistical methods, such as t tests or analysis of variance, are usually used to analyze ordinal data when comparing two groups or multiple groups. However, the underlying assumptions such as normality and homogeneous variances are often violated for qualitative data. To this end, we investigated an alternative methodology, rank regression, for analyzing the ordinal data. The rank-based methods are essentially based on pairwise comparisons and, therefore, can deal with qualitative data naturally. They require neither normality assumption nor data transformation. Apart from robustness against outliers and high efficiency, the rank regression can also incorporate covariate effects in the same way as the ordinary regression. By reanalyzing a data set from a wheat Fusarium crown rot study, we illustrated the use of the rank regression methodology and demonstrated that the rank regression models appear to be more appropriate and sensible for analyzing nonnormal data and data with outliers. 相似文献