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一、症状识别嫩组织开始受害时,呈浸润半透明状椭圆形病斑,后变褐色,随即变为黏滑软腐状,最后患部水分蒸发,组织干缩。莲座叶生长期开始发病,采收期病情逐渐加重。病株叶柄基部和根颈处心髓组织完全腐烂,由心叶逐渐向外腐烂发展,充满灰黄色黏稠物,臭气四溢,植株腐烂,用手一拔即起。二、防治方法防治软腐病应以加强田间栽培管理,防治害虫,利用抗病品种为主,再结合药剂防治,才能收到较好效果。①农业措施选择多年未种过十字花科蔬菜的田块种植。不要在低洼地种植。提早耕翻整地,使土壤经受夏季高温烤晒,减少病菌。采用垄作或高畦栽培,有利于排
First, the symptoms of identification Tender tissue began to suffer, was infiltrated translucent oval lesions, then brown, then become soft slippery soft sticky shape, the last affected area of water evaporation, tissue shrinkage. Rosette leaves the beginning of the growth period, the recovery period gradually aggravated. The diseased petiole base and root neck at the heart of complete necrosis of the heart, gradually decay from the outer edge of the heart, full of gray-yellow sticky substance, odor overflowing, plant decay, a pull up by hand. Second, the prevention and treatment methods Prevention and treatment of soft rot disease should be to strengthen field cultivation and management, pest control, the use of resistant varieties mainly combined with chemical control, in order to receive better results. ① Agricultural measures Select for many years have not planted the cultivation of cruciferous vegetables plots. Do not plant in low-lying areas. Early plowing the whole earth, so that the soil to withstand summer hot roasted, reduce germs. Ridge cultivation using ridge or Gao, is conducive to row