1. Ground tigers are also called cut rootworms and silkworms. The main hazards of mung beans are small ground tigers and yellow ground tigers. The larvae bite off the stems of mung bean seedlings near the ground, causing the whole plant to die. 1 Agricultural control: remove weeds and eliminate insect sources. 2 Chemical control: The larvae are often exposed to the host plants or the ground before the 3rd instar, with 30~50ml of chlorpyrifos per 667m2, or 500 times of spray killing, and the wheat gluten fresh bait after 4th instar larvae Booby.
Angular contact ball bearings mainly bear large unidirectional axial load. The greater the contact angle, the greater the load bearing capacity. The material of cage is steel plate, brass or engineering plastics. The forming method is stamping or turning. It is selected according to the bearing form or using condition. Others include combined angular contact ball bearings, double row angular contact ball bearings and four-point contact ball bearings.
Angular contact bearings are able to support radial load and axial load. As single row angular contact ball bearings can only support axial load in single direction, matched bearing mounting is often adopted to them as matched parts of bearings, preload for them is more convenient. Retainers are made of brass, synthetic resins or others subject according to individual bearing features and application conditions.
a=15 °7000C
a=25 °7000AC
a=40 °7000B
Angular Contact Ball Bearing,P4 Angular Contact Ball Bearing,High Speed Angular Contact Ball Bearing,Double Row Angular Contact Ball Bearing Shijiazhuang Longshu Mechanical & Electrical Equipment Trading Co., Ltd. , https://www.longsbearings.com
2, T. chinensis mainly harms the bean strain with larvae. When the young age is clustered, the leaf leaves are foraging. After 3 years of age, the leaves are scattered and the stems are tender. The old larvae can eat the fruits, which is a harmful pest. Before the 3rd instar larvae, use 0.5% of the averaging salt of 30 to 50 ml per 667 square meters, remove 40 to 50 ml or hit 10 to 15 ml, and spray evenly 40 to 50 kg of water.
3, aphids, also known as soybean meal, sucking plant juice, making the leaves curl yellow, early shedding, resulting in reduced production. Spray with 40% omethoate 800 times solution, or Dagongchen 20 g per 667 square meters of water spray. When spraying, pay attention to spraying from the bottom of the leaf and spray evenly.
Angular Contact Ball Bearing
Bearing Brand
LS
Bearing Types
Angular Contact Ball Bearing
Bearing Material
Chrome steel Gcr15/Stainless steel
Bearing Precision
P0,P6,P5,P4,P2
Bearing Package
Plastic bag+carton box
Bearing Shipping
1-3 work days
Angular contact ball bearing include:
1) Single row angular contact ball bearing
2) Matched angular contact ball bearing
3) Double row angular contact ball bearing
4) Four-point contact ball bearing
Pest control method in mung bean field
Total 1 | <First <Prev 1 Next> Last> |
share to: