It is necessary to use quick-acting pesticides: dichlorvos, methamidophos, monocrotophos, chlorfenapyr, deltamethrin and other pesticides in insecticides, which have the characteristics of fast insecticide and good effect, 1-2 hours after application. It kills pests and avoids the effects of rain on the efficacy.
It is necessary to select systemic pesticides: systemic pesticides can quickly reach the inside of plant tissues after spraying, even if it is rainy, it can still achieve the effect of killing or killing insects, such as glutinous rice, carbendazim, rusting, etc. Such pesticides.
Rain-tolerant pesticides are selected: some pesticides are more resistant to rain and can be washed even after showering. Such as Jinggangmycin, stone sulphur mixture, etc., showering 2-4 hours after spraying, killing disease and killing insects are not affected much.
It is necessary to add an adhesive to the pesticide: adding an appropriate amount of the adhesive in the prepared liquid can increase the adhesion of the pesticide on the surface of the plant and the diseased body, and the rain can also significantly reduce the leaching of the liquid.
To grab the rain spray: to observe the weather changes, catch the rain gap and spray in time, avoid spraying while spraying.
To improve the application method: when it is rainy, choose the systemic pesticides carbofuran, omethoate, phorate, aldicarb, etc. It is advisable to mix the fine soil before the pests occur and apply the shallow layer on the ridges. After the plant is absorbed, it is transmitted to the whole plant, which causes the pest to bite and poison. This method can avoid rain washing, prevent the loss of efficacy and improve the insecticidal effect.
It is necessary to use drugs according to the pests and infestation: the ground tigers, the rice leaf curlers, etc. are all harmful at night, so it is advisable to treat them in the evening.
Non-formed refractory for tundish
1 casting materials of lining used for tundish
Special function:
Characteristics: 1 volume stability, high temperature performance, The construction does not need to vibrate Self-flow forming
High strength, wear-resisting, anti-erosion and peeling
3 baking is adaptable
application: used for permanent lining of tundish, which can also be prefabricated into block weir
2 coating for tundish
Features: good daubing, anti-corrosive, Purifying steel water works strongly, easy to dissolve
application: smelting general steel grade, smelting high steel grade, smelting special steel grade
Unshaped Refractory For Tundish
Unshaped Refractory For Tundish,Castable Refractory,Refractory Materials
Zhengzhou YuXin Kiln Engineering Co.,Ltd. ,