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落叶松早期落叶病的药剂防治试验,根据病害的发生与病原菌的寄生部位和病原菌的越冬场所,分别进行了树冠、地面病叶及烟剂防治试验。(一)、树冠药剂防治试验落叶松早期落叶病树冠药剂防治,主要用液剂、粉剂分别进行防治试验.根据病原菌有性孢子的传播规律及危害特点,对药剂种类选择以既能杀菌又能抑菌为主,消灭病原菌,达到防病的效果.在幼龄落叶松林进行树冠喷药,供试药剂有:石灰硫磺合剂、波尔多液,苯骈咪唑-44、代森锰、有机锡、退菌特,农抗101、102、代森锌、45—
Larch early leaf decay disease prevention and control experiments, according to the occurrence of the disease and the parasites of pathogens and pathogenic bacteria overwintering places, were crown, ground sick leaves and smoke prevention and control tests. (A), crown prevention and control experiments Larch early deciduous tree canopy disease prevention and treatment, the main liquid, powder prevention and control tests were carried out.According to the spread of pathogenic bacteria spores and the characteristics of harm to the types of drugs to both sterilization Bacteriostatic, eliminate pathogenic bacteria, to achieve the effect of disease prevention in the young Larix forest crown spray, the test agents are: lime sulfur mixture, Bordeaux mixture, benzimidazole -44, dexmedetomidine, organic tin, Fung special, agricultural anti-101,102, dezincin, 45-