番茄出现烂根现象怎么办?

番茄出现烂根现象怎么办?
2025-01-23 22:44:01
推荐回答(5个)
回答1:

这个只有改善土壤环境,找到病因,不要总是浇水,保持通风透气,

回答2:

如果烂了,然后就不要了呗。

回答3:

番茄烂根是一种危害西红柿根部的病害,它主要会造成西红柿根部腐烂、不长新根,那么其发病原因有哪些呢?

根腐病主要危害西红柿根部,发病初期于主根和茎基部产生褐色斑,后逐渐扩大、凹陷,严重时主根变褐腐烂,导致地上部逐渐枯萎。纵剖茎基部或根部,维管束变为深褐色,之后根茎腐烂,不生长新根,发病后期,病株多枯萎而死。
番茄根腐病病原属半知菌亚门真菌,病菌以菌丝体和卵孢子随病残体在土壤中越冬。在苗床内传播主要是带菌的土壤、肥料、农具和浇水等。病菌从幼苗伤口侵入,再借雨水、灌溉水传播。高温、高湿宜于此病发生。苗床连茬、地面积水、施用未腐熟的肥料、地下害虫多、农事活动造成根部伤口多的地块发病较重。

防治措施:

农业措施。做好苗床土壤消毒工作,培育无病壮苗。平整土地,做好排灌系统、高畦栽培。重病地与非茄果类、瓜类蔬菜实行3年以上轮作。加强水肥管理,适时适量灌水,浇小水,切忌大水漫灌。雨后及时排水,浇水后及雨后适时中耕松土。施用充分腐熟的粪肥,增施磷、钾肥,避免肥料施用不当烧伤根系。初见发病植株及时拔除烧毁。
药剂防治。发病初期及时进行药剂防治,使用乾农“万稼能银离子”微生物菌剂进行防治,历经多年的大面积田间使用数据表明,对由重茬病害、土传病害,根腐病,病毒病害、死苗,烂根,死棵,立枯病、猝倒病等作物根部病害,都有很好的防治效果。

回答4:

番茄出现烂根现象怎么办?
番茄出现烂根现象怎么办?
我来答
隆念双abc
LV.2 2019-08-19
番茄烂根现象普遍存在的,要找对原因才好解决,番茄烂根有以下原因:
1、泥土湿度大因为冬季大棚内温度低,湿度相对较大,植株叶片的蒸腾量小,大批浇水造成地温过低,泥土通透性差,从而引起烂根、沤根的景象。
2、日夜温差大西红柿结果期的适宜温度,白天为25—28℃,夜间为16—20℃。当长时间夜间温度低于15℃,且日温高于30℃时,地下部根系受损,地上部蒸腾过大,从而引起植株萎蔫。
3、重茬时间长长期重茬泥土内会残留大批的各种致病菌,病菌的活动使番茄易感青枯病、枯败病、等病害。而且容易影响泥土的团粒结构,损害泥土通透性。
二、防治方法
1、选择抗病品种冬暖棚栽培的品种应采取无限生长型、大果、耐寒、耐阴、抗病的优质品种。
2、多施有机肥容易发生沤根的泥土多是粘重、透气性差的粘壤土。有机肥不但营养全面丰盛,而且能有效改良泥土团粒结构,增长泥土通透性,预防病害的发生。
3、加强棚内通风透光冬暖棚内特别是浇水以后(在保证棚温的前提下)应增长通风透光量,减少棚内空气和泥土湿度,避免病害发生。
4、如果出现烂根可以用乾农:“根尚雅”灌根进行防治。

回答5:

1、选择抗病品种冬暖棚栽培的品种应采取无限生长型、大果、耐寒、耐阴、抗病的优质品种。
2、多施有机肥容易发生沤根的泥土多是粘重、透气性差的粘壤土。有机肥不但营养全面丰盛,而且能有效改良泥土团粒结构,增长泥土通透性,预防病害的发生。
3、加强棚内通风透光冬暖棚内特别是浇水以后(在保证棚温的前提下)应增长通风透光量,减少棚内空气和泥土湿度,避免病害发生。
4、如果出现烂根可以用乾农:“根尚雅”灌根进行防治。

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