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作物品种
    Study on the Synthetic Decision System for the Resistance of Crop Varieties to Aphid
    作物品种抗蚜性综合决策体系研究
    Lots of researching results and productive practice both point out that, for solving disease and/or pest disserving crop production, it is the most essential, most effectual, and most economical method to breed and popularize crop varieties which have the characteristics of resistance to disease and/or pest.
    大量的研究结果以及生产实践业已证明,培育并推广抗病虫作物品种,是解决作物病虫害危害的最根本、最有效和最经济的方法。
    Because of these factors such as the variation of strain isolates, the differentiation of pathogenicity, the possible interaction between the host and pathogeny, and the migration of the pest, and their improvement of drug-fast ability, et al, none of the released crop varieties have the durable resistance to disease and/or pest, which is in no favor to the sustainable agricultural development.
    但是,由于病原物生理小种的变异、致病力的变化和寄主与病原物间可能存在的互作、害虫的迁飞及抗药性的增强等原因,导致已经通过作物品种审定的作物抗病虫品种的抗性难以持久,不利于农业的可持续发展。
    The insect accumulated survival rate,a new index of insect survival,is proposed in this paper. This new index can not only tell the dynamic change able course of insect survival in various crop varieties,but also contains the age structure and changeable characteristics of insect,as well as the continuous changeable feature of insect in vairous crop varieties.
    提出一新的衡量害虫存活率指标“累积存活率”,该指标不仅能反映害虫在不同作物品种上存活率的动态变化特征,而且将虫态结构及其危害特征纳入其中,能反映出害虫在不同作物品种上的持续危害特征。
    The sensitivity to metsulfuro-methyl was tested in 33 crop varieties of 10 families. The results were as follows. (1) Early rice was more sensitive than late rice, normal rice more than hybrid rice.
    通过测定 10科 33个作物品种对甲磺隆敏感性 ,结果表明 :(1)水稻品种的敏感性 ,早稻比晚稻敏感 ,常规稻比杂交稻敏感。
    Agricultural biodiversity may be affected by many factors, such as geographical location, climatic types, environmental variables, crop varieties, interspecific relations and cultivated activities, etc.
    影响农田生物多样性的因素很多 ,如地理位置、气候类型、环境条件、作物品种、种间关系、人类的栽培活动等。
    Field management measures including crop rotation/continuous cultiva-tion,irrigation/drought,different nitrogen levels applied,crop varieties and sowing densities,were taken in maizefield in Liaoning province,northeastern China to identify and decrease the potential menace of A. flavus.
    为识别玉米田间的黄曲霉种群,减少其潜在危害,在辽宁省玉米主产区,布设了一组以轮作/连作、灌溉/干旱及不同施氮量、作物品种和种植密度等田间管理措施为主要处理的田间试验,进行田间观测和黄曲霉种群鉴别及黄曲霉产毒的实验室研究。
 

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