Disinfection methods of flower culture soil and careful treatment of flower medicine

For the prevention and control of flower diseases and insect pests, we can not simply rely on certain chemical pesticides, but need to use different pesticides and doses according to the actual situation of flower growing places. The following is a summary:

Dimethoate, omethoate: plum blossom, cherry medicine, cherry, peach, elm leaf plum, tapestry, apricot, pear and other rose ornamental plants can produce obvious drug damage. Dimethoate also does great damage to shrimp flowers and coral flowers of the family. If dimethoate is sprayed in June and October, it often causes petals to wither and curl, leaves, inflorescences and branchlets fall off, and loses its ornamental value.

Dichlorvos: dichlorvos has obvious drug damage to ornamental plants such as plum blossom, cherry, peach, apricot, elm leaf plum and so on. Dichlorvos also has varying degrees of drug damage to rhododendron, steamed bread willow, kiwifruit, Robinia pseudoacacia, walnut and melons. Great care should be taken when using pesticides to control the pests of these plants so as not to cause unnecessary losses.

Turpentine mixture: the use of turpentine mixture has obvious drug damage to persimmons in summer and adverse effects on oranges in spring and summer.

Trichlorfon: trichlorfon is harmful to cherry blossoms, plum blossoms, Jinshuai varieties in apples and so on.

Stone-sulfur mixture: stone-sulfur mixture is harmful to peaches, plums, plums, pears and other Rosaceae plants. If stone-sulfur mixture is used on these plants, it is best to spray it in the deciduous season. Pesticide net tips, do not use in the growing season or flowering and fruiting period. Stone-sulfur mixture also has certain drug damage to kiwifruit, grape, cucumber and legume flowers.

Fenitrothion: the use of fenitrothion to kill insects in high temperature season will not only cause serious drug damage to pomegranate, but also cause great damage to cruciferous flowers.

Bordeaux liquid: Bordeaux liquid is sensitive to peaches and plums in the growing season. Pears, apricots and persimmons are prone to drug damage when it is lower than the multiple type, and grape is prone to drug damage when it is higher than the same amount.

Chlordimeform: when using chlordimeform to control flower pests, it should be avoided on hibiscus and dahlia.

Topiramate: when controlling diseases and insect pests of kiwifruit, you should avoid the use of topiramate.

Petroleum emulsion: Petroleum emulsion is easy to cause drug damage to some peach varieties, and it is best to use it in the deciduous season.

In order to avoid the harm of pesticides to many ornamental plants, the first is to change to other pesticides with high efficiency and no harm; the second is to reduce the concentration as far as possible; the third is not to spray under the conditions of high temperature and high humidity, so as to avoid the loss of capacity. in addition, we should also pay attention to the reasonable mixed use of pesticides. (ask Lan)