论文部分内容阅读
棉花枯萎病是棉花生产上一种危害性大的病害,已列为国内外植物检疫对象之一。该病发生后,危害严重,根治困难,既影响棉花的产量,又影响棉花品质。棉花感病后,轻则落花、落蕾、铃小、质劣,重则枯死,造成缺株断垄,一般可减产20～30%,重的减产60～70%,甚至无收。一、发生蔓延情况棉枯萎病是一九六四年首次在我省原彭泽棉花试验站发现,病株仅百株左右,面积半亩。当即封锁病田,用氯化苦对病土进行消毒处理,并挖除病土,烧毁残株,期望一举根治,但未完全见效。至一九六五年发病面积扩大到五亩左右,病株九百余株。同年在芙蓉农场一大队,也发生零星病株。一九六六年又在彭泽棉船公社复排大队,发现零星病株。时隔八年后,于一九七四年在彭泽县
Cotton Fusarium wilt is one of the most harmful and damaging diseases in cotton production. It has been listed as one of the objects of plant quarantine both at home and abroad. After the occurrence of the disease, the harm is serious and the cure is difficult, which affects not only the yield of cotton but also the quality of cotton. Cotton susceptible, ranging from falling flowers, falling buds, small bell, poor quality, weight is dead, resulting in lack of strains broken ridge, the general reduction of 20 to 30%, heavy production 60 to 70%, or no income. First, the occurrence of the spread of cotton blight is the first time in 1964 in our province found that the original Pengze cotton test station, only about one hundred diseased plants, an area of half acre. Immediately block the disease field, the soil with chloropicrin disinfection, and dig soil, burberry soldes, stubble, expect radical cure, but not completely effective. By 1965, the disease area expanded to about five acres and the diseased strains were more than 900. In the same year a group of Furong farms, sporadic disease also occurred. In 1966, he again found a squad of diseased pigs at the Penang Cotton Mover Commune. After a lapse of eight years, in Pengze County in 1974