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秋冬韭菜在生产过程中经常出干尖、根腐、叶枯死株和茎叶腐烂等一些病害症状。而相同的症状发病原因不一定相同,正确判断其发生原因并及时采取有效防治措施是栽培的关键。一、干尖。发生原因有以下几种:1、土壤酸化。韭菜生长发育适于中性土壤,如长期大量施入粪稀、饼肥和其它酸性肥料,就会使土壤酸化而引起酸性危害。表现为韭叶生长缓慢、细弱、外叶枯黄。防治方法是
Autumn and winter leek in the production process often dry tip, root rot, leaf blight and stem rot and other symptoms of some diseases. However, the same symptom may not be the same as the cause of the disease. Correctly judging the cause of the disease and taking timely and effective prevention and cure measures are the key points of cultivation. First, tip. Occurred for the following reasons: 1, soil acidification. Leek growth and development for neutral soil, such as long-term large-scale application of manure, cake and other acidic fertilizer, it will make the soil acidification caused by acid. The performance of leek leaves slow growth, weak, outer leaves yellow. Prevention method is