沙棘干缩病无公害控制技术研究

在齐齐哈尔市富拉尔基区黑龙江省森林与环境科学研究院试验示范基地及甘南县甘南林场的大果沙棘林内,采用随机区组设计,根部灌药的方式,研究了噻茵铜、恶霉灵、普力克、多茵灵等4种低毒土壤杀菌剂对沙棘干缩病发生的影响.结果表明,几种杀茵剂均可减少沙棘干缩病的发生,但不同杀菌剂对沙棘干缩病的影响程度不同,恶霉灵对减少沙棘干缩病的发...     

农村资金供需缺口成因及其资金供给策略

运用规范研究和实证分析阐述农村资金供需缺口形成的原因是：农村建设资金需求旺盛、农村资金的外流和金融机构的农村信贷业务收缩，并从完善政策性金融扶持农业经济、引导商业金融进入农村经济领域、合理利用民间金融以及合理引导资金有效回流等方面探讨农村经济发展的资金供给问题。     

Blackspot injury of film-wrapped potatoes in relation to bruising and respiratory gases

Summary Film-wrapped potatoes were compared with non-wrapped potatoes for blackspot susceptibility. Individual ‘Russet Burbank’ potatoes wrapped in Cryovac D-955 shrink film were less susceptible than non-wrapped potatoes to internal blackspot injuries when stored at 24°C. The film wrap reduced potato weight loss (water loss) but it did not alter the rate of respiration or the endogenous oxygen or carbon dioxide levels. Thus the reduced susceptibility to blackspot could not be related to reduced oxygen levels much as would inhibit the activity of polyphenol oxidase, the enzyme responsible for the development of internal blackspot. In addition to high suscetibility to internal blackspot, the non-wrapped potatoes shrivelled at 24°C and lost their marketable appearance.     

浅谈城市道路裂缝的根源及防治办法

本文较详细的对城市道路裂缝的产生原因、根源等进行了论述,并且提出了相应的防治方法。     

七种药剂对枣缩果病病原菌-细交链孢菌抑制作用

为有效防治枣缩果病的危害,选用7种杀菌剂对病原菌——细交链孢菌Alternaria alternata进行了室内抑菌试验和田间药剂防治试验。结果表明:20.67%万兴乳油 68.75%易保可分散粒剂 72%链霉素可溶性粉剂、10%世高可分散粒剂 90%新植霉素可溶性粉剂组合、80%大生M-45可湿性粉剂的抑菌能力最强;其次为20.67%万兴乳油、10%世高可分散粒剂和85%枣病克星可湿性粉剂;4%绿盾农抗120水剂对两种病原菌的抑制作用不明显。