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一、立枯病。立枯病是辣椒苗期的主要病害之一,小苗和大苗均能发病,但一般多发生在育苗的中后期。发病时病苗茎基部产生椭圆形暗褐色病斑,早期病苗白天萎蔫,夜间恢复,随后病斑逐渐凹陷,并扩大绕茎一周,有的木质部暴露在外,最后病灶收缩、植株死亡。辣椒立枯病属真菌病害,以菌丝体或菌核残留在土壤和病残体中越冬,一般在土壤中能存活2—3年。菌丝能直接侵入寄主。也可通过雨水、流水、农具、带菌农家肥等传播蔓延。防治辣椒立枯病可选用50%速克灵可湿性粉剂1500倍液喷雾,或者选用70%代森锰锌可湿性粉剂500
First, the blight. Blight is one of the main diseases of pepper seedling, small seedlings and seedlings can occur, but generally occur in the mid-late nursery. Sick at the onset of the base of the disease stems produce oval dark brown lesions, the early seedling wilting during the day and night recovery, and then lesion gradually hollowed out and expanded around the stem a week, some xylem exposure, and finally the lesion shrinks, plant death. Pepper blight is a fungal disease, with mycelium or sclerotia remaining in the soil and sick in winter, usually in the soil can survive 2-3 years. Mycelium can directly invade the host. Can also be spread through the rain, water, farm tools, fungal fertilizers and other spread. Control pepper blight can be used 50% of the speed of Kling WP 1500 times spray, or use 70% Mancozeb WP 500