When it comes to mites, I don’t want to be a stranger to grow leeks. April and May are the high seasons for locusts. How do you effectively prevent mites and mites? Let’s follow the small series of pesticide nets . Take a look.
Locust control methods:
In the Spring irrigation, pesticide poisoning can be added. In the late April, the adult emergence period can kill 600 times of killing and killing; in early May, 40% of omethoate 800 times liquid can be used to control roots.
Underground pests of cockroaches and cockroaches: In the 3, 4, and 5 months, it can be used as a poison bait with 90% trichlorfon 150g 30 times liquid in the leek, mixed with fried wheat bran or bean cake 5kg. Sprinkle into the day or in the field every 3 to 4 meters to plan a bowl of large pits, put the poison bait and cover the soil, plan a row every 2 meters or so, to lure.
More pesticide knowledge, please pay attention to China Pesticide Network
Non-tapping screws are machine Screw, the pieceworker to be fastened must be tapped with taps in the screw hole in advance to match the screw threads.
The difference between tooth screws and other screws depends on whether they can be used together with nuts. Tooth screws can be used with nuts. And relative to the screws of other teeth, there are self-tapping screws. The nut of this kind of screw has no bow teeth. As for the standard teeth and fine teeth are only different pitch, it is the nut of the machine screw
Hex Machine screw,pan machine screw,flat machine screw,truss machine screw,Hexagon socket screws
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