百合花立枯病的危害与防治

植物图片 2019-05-28 09:50

百合立枯病主要病害在幼苗期，百合花立枯病危害百合鳞茎和根系，使鳞茎腐烂，根系烂死，最后植株直立枯死。这种病害发生普遍性较强，寄主广泛。发病严重时，可造成百合幼苗死亡，造成较大的经济损失，田间积水或气温过低可加重危害。下面是主要的防治措施：

百合花立枯病的危害与防治

 

 

百合立枯病的防治措施：

第一、百合立枯病主要靠土壤传播，连作会使病情加重。应该实行轮作，并选择排水良好，土壤疏松的地块栽培，可选择作高畦栽培，并注意开沟排水。

第二、在播种前要注意选择无病的鳞茎，并用1：500的福美双溶液或用40{bf}的甲醛溶液加水50倍浸种15分钟进行消毒。

第三、出苗前喷1：2：200波尔多液1次，出苗后喷50{bf}多菌灵1000倍液2-3次，保护幼苗。发病后，及时拔除病株，病区用50{bf}石灰乳消毒处理。

第四、大田管理过程中，要注意开沟排水，改善通风、光照条件，并要增施磷钾肥，避免偏施氮肥，以提高抗病能力。通常每月每株根部施一次20克至30克磷酸二氢钾或高效生物磷钾肥，或淋施腐熟的人畜粪便水每株2-3千克水。

第五、大田发病后要及时拔除病株，并用50{bf}石灰乳消毒病穴。

百合花的盆栽种植方法

1、最好种植时间：通常在9～10月份种植。

2、土壤环境要求：盆土要肥沃、排水良好的微酸性到中性的沙质壤土，可用腐叶土、沙土、园土的混合介质，比例为1:1:1。

3、肥水管理：上盆时施入腐熟的有机肥料和少量骨粉，生长开始到开花初期每隔2周施1次稀薄液肥，花期增施2次磷、钾肥。生长旺期和天气干旱时适度多浇水，平时保持盆土湿润，但不要过湿，以避免鳞茎腐烂。

4、盆土更换：每年换1次盆，生长期经常转动花盆。

百合花的盆栽种植方法

专题： 百合 百合花
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