Chemical dressing control of sugar beet pests and diseases
There are raceways on the inner and outer rings of angular contact ball bearings, and the inner and outer rings can be displaced relative along the axial direction of the bearing. These bearings are particularly suitable for combined loads, i.e. loads that act in both the radial and axial directions. The axial load bearing capacity of angular contact ball bearings increases with the increase of contact angle α. The contact angle is the angle between the contact point connection between the ball and the raceway in the radial plane and the perpendicular line of the bearing axis. Angular Contact Ball Bearings,Contact Angle Ball Bearing,Angular Ball Bearing,Angle Contact Ball Bearing Hebei Fangqiang bearing manufacturing Co., LTD , https://www.fangqiangbearing.com
(1) Using 50% Fumei double wettable powder 0.4 kg, mixed with 50 kg of beet seeds, can control beet blight and brown spot disease.
(2) Using 95% of the dexamethasone wettable powder 0.4 kg or 75% of the dexamethasone wettable powder 0.5 kg, mixed with 50 kg of beet seeds, can control beet blight and root rot.
(3) 0.4 kg of 40% pentachloronitrobenzene powder and 50 kg of beet seeds can be used to control beet blight.
(4) Use 35% methylthiophosphorus emulsifiable concentrate 1.2 kg, add 50 kg of water, mix 50 kg of beet seeds, and sown 24 hours after suffocating, which can prevent and cure the blight, and prevent and control the pests in the seedling stage.
(5) Use 35% methylthiophosphorus emulsifiable concentrate 0.5 kg, add water 10 kg, and suffocate 50 kg. After 24 hours, mix with 2.5 kg of Bao Miaoling for seed dressing. Blight, tuberculosis and root rot, and control of underground pests, mites and seedlings.
(6) using 40% methyl isoflavone emulsifiable concentrate 0.5 kg, adding water 60 kg, soaking beet seeds for 24 hours, or using 0.7 kg of methyl iso-phosphorus emulsifiable concentrate to mix 50 kg of beet seeds, can be sown after drying. Control underground pests.
(7) After frying 50 kg of wheat bran, add 50% of phoxim 0.5 kg, or use 90% of crystal trichlorfon 0.5 kg to make poison bait, sprinkle it into the field in the evening, and put bait per hectare. 150 to 250 kilograms can effectively control underground pests such as cockroaches, tigers and cockroaches.
(8) Use 35% methylthiophosphorus 0.4 kg, add 20 kg of water, mix 20 kg of beet seeds, mix well and put in a container, turn it up and down once every certain time, soak it for 24 hours. It can control seedling pests such as beet weevil and jumping armor.
The types of angular contact ball bearings are divided into: α=15° angular contact ball bearings (70000C type); α=25° angular contact ball bearings (70000AC type); α=40° angular contact ball bearings (70000B type); Back-to-back paired double angular contact ball bearings [70000C(AC, B)/DB type]; Face-to-face paired double angle contact ball bearings [70000C(AC, B)/DF type]; Tandem Paired Double Angular Contact Ball Bearings [70000C (AC, B)/DT Type]; Double row angular contact ball bearings with ball notch (00000 type); Double row angular contact ball bearings without ball notch (type 00000A); Double row angular contact ball bearing without ball notch, one side with dust cap (00000A-Z type); Double row angular contact ball bearings without ball notch, with dust caps on both sides (00000A-2Z type); Double row angular contact ball bearing with sealing ring on one side without ball notching (00000ARS type); Double row angular contact ball bearings with sealing rings on both sides without ball notching (00000A-2RS type); Four-point angular contact ball bearings (QJ0000 type), a total of 13 types