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我国烟区辽阔,由于气候条件、土壤及栽培方法的不同,各地病虫害的发生种类和为害程度也不相同。本文扼要介绍春烟苗期及大田期经常发生的主要病虫害及其防治措施,供生产单位参考。一、苗期主要病害1、冻害和饥黄:春烟育苗多采用温床和塑料薄膜覆盖育苗。由于早春气候较低,烟草播种后幼苗生长缓慢,当幼苗四片真叶前后,倘遇到寒流,易遭受冻害。受害烟苗心叶变黄
Due to the different climatic conditions, soils and cultivation methods, the types of pests and diseases in different parts of China and the degree of damage are also different. This article briefly introduces the main pests and diseases and its prevention and control measures that occur frequently in spring tobacco seedling and field, for the production unit for reference. First, the main disease at seedling stage 1, frost damage and hunger: more use of hot spring breeding nursery stock and plastic film cover nursery. Due to the low temperature in early spring, the seedlings grow slowly after sowing, and the frostbite can easily occur if cold flow is encountered before and after four true leaves of seedlings. Victims of tobacco leaves turn yellow