Melon (also known as cotton aphid) is very fertile. Some farmers ask why Guayu is playing more and more. This is because: First, it is late. In the summer, it takes only 4 to 5 days to complete the generation, so the speed of its growth is quite amazing. If the amount of insects is too much or the leaves are rolled up, it will be late. The second is improper medication. For example, pyrethroid pesticides have a good effect. Since farmers use them continuously, they quickly develop resistance. The effect is getting worse and worse, so they have to increase the concentration. This will kill a lot of natural enemies, with fewer or no natural enemies. The pests are bound to be paralyzed. When the pesticides are used alternately, it is not easy to produce drug resistance. The effective agents are: 25% speed music emulsifiable oil 800~1000 times liquid, 20% chrysanthemum emulsifiable oil 800~1000 times liquid, 10% imidacloprid wettable powder 2000~3000 times liquid, 2.5% Bifenthrin (Uranus) EC 2000-3000 times solution, the above agents are used at the beginning of the period, and sprayed once every 10 to 15 days. Some pharmacies, such as imported phlegm-fog wettable powder and domestic anti-Puwei WP, have strong specificity, and are only effective for rapeseed (such as peach aphid, radish, and cabbage), but have effect on melon Very poor. Therefore, rumors and anti-Buddhism can not be used to control melons. If the cucumber in the protected area has aphids, it can be controlled by smoking. Each acre can use 10% of the killing agent, 300g, or 20% of the dichlorvos, 200~250g, or the "blue smoke" III-2. 200 grams of smoke agent. The method of application is: in the evening, divide the medicine into 4 parts, spread it at 4 points, and ignite the chamber after ignition. In addition, you can also use the smoked granules II, 300 grams per acre, cut the medicine bag into small mouths, and divide it into 10 parts of the same distance on the ground. When the person quits, the shed is closed immediately, and the temperature is kept at 20 °C~ At 35 ° C, the effect is not good when the temperature is too low, and the growth of the crop is affected when the temperature is too high. In the winter, early spring and autumn season, the drug should be applied in the morning and sealed for 24 hours after application. Summer, late spring and early autumn should be carried out in the evening and sealed for 12 hours after application.
Product Name:Galv open eyebolt
Key words:Galv open eyebolt on cross arm and pole,Power galv open eyebolt,Open eyebolt for galv
Application: For deadending wire and guys strand on cross-arms,poles,or building.Used wityh flat washer and curved flat washer.
Size:M16x150
Part No.: Q.Q.Q.765924
Material elongation:Q345,Q235
Finished: Galvanized,HDG,Plain,Painting,Dacromet,Electrogalvanizing,Oiled,Phosphorization,etc
Place of origina:China
HS Code:730820
Trademark:ZBRF
Color:Customized
Part:Power,Galv
Transport Package:Plastic Bag or Gunny bag and Wooden Case
Port of shipment:Shanghai Port,Taicang Port
Certification:CE,SGS,A.S
Tensile strength ≥410Mpa
Yield strength ≥280Mpa
Elongation≥22%
Open Eyebolt On Crossarm,Open Eyebolt On Pole,Power Galv Open Eyebolt,Open Eyebolt For Galv TAICANG ZHONGBO RAILWAY FASTENING CO., LTD. , https://www.railfastener.com
Control pesticides should be precise