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夏季蒲葵最易发生炭疽病,因为此时温度高,温度大,病菌易传播。防治不及时会造成病情加重,甚至整株死亡。发病一般症状:叶片先端干枯,逐渐向叶片发展,如遇阴雨天气传播迅速,延至分裂处,到达主茎后,整株便会死亡。防治方法: (1)剪除病叶或有病斑部分的部分叶片烧毁,养护中加强通风,适当受光,减少喷水,降低室内空气湿度,对有病史的地域、花圃,提前预防。 (2)喷洒50％退菌特可湿性粉剂80～1000倍液,或75％百菌清可湿性粉剂500～800倍液,每7天一次交替使用,连续4～5次可抑制病情发展。 (3)要勤于观察,及时发现病情,做到防早、防了。●
Pachyrhizus most likely to occur in summer anthrax, because at this time the temperature is high, the temperature is large, easy to spread germs. Prevention and treatment will not result in aggravating illness in time, or even whole plant will die. The general symptoms of disease: leaves apex dry, and gradually to the leaves of development, in case of rainy weather spread rapidly, extended to the division, to reach the main stem, the whole will die. Prevention and treatment methods: (1) cut off diseased leaves or parts of the lesion part of the leaves burned to strengthen conservation during conservation, appropriate light, reduce water spray, reduce indoor air humidity, the history of the region, flower beds, prevention in advance. (2) spray 50% dewetter WP 80 to 1000 times, or 75% chlorothalonil WP 500 to 800 times, alternating every 7 days for 4 to 5 times to inhibit the progression of the disease. (3) to diligent observation, timely detection of the disease, so that anti-early, anti-the. ●