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The vegetable field adopts chemical control to control weeds, and the method is simple and efficient. The herbicides commonly used in vegetables and the methods of use are briefly introduced as follows, for reference by farmers for the selection of pharmaceuticals.
1. Alachlor. Also known as Lasso: Otrasuo, grass is not green, is a systemic soil treatment agent, except cucumber, leeks, spinach should not use this drug, other vegetables can be used. Before sowing or before transplanting, 300-500g of medicine can be used per 667 square meters, 40~50kg of water can be sprayed evenly, and then sown or transplanted with shallow soil. If the film is covered after application, the dosage should be reduced appropriately. (about 1/3 to 1/2), it has a significant effect on the prevention and treatment of 1 year old grasses and some broadleaf weeds.
2. Fluorine. Trifluralin is a broad-spectrum, contact-killing and systemic herbicide. Because of its wide range of weeding and good effect, it is especially popular among farmers. Vegetables such as kidney beans, kale, lettuce, carrots, etc. can generally be treated with soil before sowing. Use 48% of Fluramine Emulsifiable Oil 150-200g per 667 square meters, add 75-100g of water and mix well. Then spray evenly with sprayer. Immediate colonization can also play a role in mixing soil. Matters needing attention: 1 Fluorine is easy to photolysis, volatile, should be mixed in time after spraying, otherwise it will easily reduce the efficacy. The main mechanism of action of flurin is to affect the growth and transmission of weed hormones and inhibit cell division. However, weeds cannot be inhibited from germination and therefore cannot kill dormant weed seeds.
3. Shi Tianbu. It is a high-efficiency, low-toxic, broad-spectrum herbicide for aniline. It is used for direct seeding vegetables such as Chinese cabbage, kale, cauliflower, leeks and shallots. Before germination, it is used with 33% emulsifiable concentrate of 100-125ml per 667 square meters. 35kg soil surface spray, and then watering, for cabbage, cauliflower, eggplant, green pepper, lettuce, tomato and other transplanted vegetable fields, before transplanting or transplanting slow seedlings, use 33% emulsifiable concentrate 100-150ml per 667 square meters, Spray 40 to 50 kg of water. Note: 1 Avoid direct contact between seeds and crop growth points and the drug layer when applying. 2 vegetables used before seeding after sowing should pay attention to increase the amount of seeding, especially small seeds should be planted in soil below 2cm or cover a thin layer, but live watermelon can not be used.
4. Saikejin. Also known as sike, oxazin, oxazinone, and lycide, it is a selective, low-toxic and high-efficiency herbicide for trinitrobenzene. Before transplanting tomato seedlings, use 70% WP 40-50g per 667 square meters. Spray on the surface of water 35~40kg; before the sowing of the potato, use 70% wettable powder 50-75g per 667 square meters, spray about 40kg of water on the soil surface. Note: It has a certain effect on grass weeds, but it is not effective for perennial weeds.
5. Grass is dead. It is an amino acid ester selective pre-emergence soil treatment herbicide. It can be used to control weeds in various vegetables such as sweet potato, cucumber, tomato, celery, broccoli, spinach, kidney bean, lettuce, radish and potato. Generally, before planting or before transplanting, use 200g of 50% emulsifiable oil per 667 square meters, spray 40~50kg of soil surface, or evenly mix 15~20kg on the fine tide, and mix 2~3cm soil layer in time.
6. Acetochlor. It is a broad-spectrum high-efficiency, dry field, selective pre-emergence herbicide, high-efficiency control of weeds, foxtail, crabgrass, maiden and other grass weeds, and a variety of small-grain seed propagation such as medlar, leeks, medlar, purslane, and dodder. Broadleaf weeds are suitable for weeding in a variety of vegetables. Generally, after the vegetable land is well prepared, before the sowing of the vegetables, the weeds sprouting period, using 48% emulsifiable concentrate of 75-85 ml per 667 square meters, adding 50 kg of soil surface spray, and then sowing.
High Speed Door Motor And Control Box
Our company have German SEW Motor, Japan Mitsubishi Controller. Our own brand Hofic servo motor and controller. Chinese famous brand SEJ motor and Holip controller.
About our German SEW Motor and Japan Mitsubishi Controller: It is easy to find the ideal energy-efficient motor for your application at SEW. The series has a suitable design in its range for the globally applicable efficiency classes. Select the power and frequency within this motor design and you have already taken care of the most important selection criteria.All other motor options are of course available independently of the efficiency class. A comprehensive braking concept and cost-optimised built-in encoders ultimately complement the motor range. Comprehensive braking concept and combinations i.e. up to three different brake sizes per motor size featured in the range: Cost-optimised built-in encoders integrated into the motor. Motors for efficiency classes IE1 to IE4.Compact design saves space and costs. Future-proof, also as regards environmental protection (standards). Reduction in operating costs when using energy-efficient motors; our energy-efficient motors conform to the efficiency classes.
About servo High Speed Door Servo Control System: Our rolling gate servo control system is suitable for high speed and high usage soft and hard rolling gate. The whole system is in a small and light package, it has high torque and high operating speed, lower noise, high reliability, smooth and soft operating curves, it`s suitable for high speed and usage environment. The rolling curtain can be controlled by pull switch, push button, Bluetooth, ground radar, ground magnetic sensors. Operating Speed: 1M/s; Operating Width: ＜16 ㎡; Daily operating time: ＞2000 time; Rated voltage: 220v; Rated Output: 0.75 KW/1.5KW.
The system can operated via: 1) control box; 2) inching electronic control; 3) continuous automatic operation; 4) emergency stop; 5) single side operation box; 6) time delay; 7) ground radar and/or magnetic sensors. Please refer to Wiring Terminal for eternal connections.
System has fuse/safety wire shutdown switch for three-phase power protection, fuse/safety wire for operating circuit protection, and temperature sensing relay for motor protection.
Stroke Controller utilizes absolute value encoder. Connect the absolute value encoder and reducer via encoder`s axle, and fix the wings on to the reducer, than insert the aviation plug into plug receptacle.
The mounting screw for the control box must inspect regularly to prevent screw been getting loose and falling off. Check the internal and external wirings. Check and change the oil for the redactor on regular basis.
Precision: The system use Full closed-loop servo control and Double Encoder design. This is to ensure long operating life and to prevent overshooting during operating.
Stability: The system utilizes integrated design concept, in order to simplify internal wiring and prevent any function caused by wiring and terminal connections.
High Speed: Motor max speed is 2500 rpm; door max operating speed is 2 m/s.
Smooth: The torque servo system can adjust torque to the load automatically, and its speed curve mode step less speed regulating to ensure a smooth operation.
About SEJ motor and Holip controller: Three-phase asynchronous motor with magnetic brake has broad uses, It is suitable for various mechanical main drive and auxiliary drive, and it is also used for various required rapid stopping and correct positioning. The braking time within 0.2 second. Electric motor is added the DZM series direct current electromagnetic arrester by the basic series(Y series) electric motor.The protection class of electric motor part is IP44,the arrester part is IP23.if be applicable to bad environment can also make the arrester part into IP44,but customer have to put forward a special request while ordering,the manufactory can design a manufacturing exclusively. Its structure diagram is picture 1 and 2,picture 1 is the structure with hand release.Picture 2 is the structure without the hand release.Its operating principle BE, after being to make the retardation coil(6)to connect direct current power supply,because of the function of electromagnetic force,electromagnet(7)attract gag bit(5),and compress spring(24),make arrester disc(2)away from the friction surface of the gag bit(5)and shield(26)(the electrical motor can immediately operate normally).When the power supply cuts off after,the electromagnet(7)loses electromagnet force,the spring(24)releases the gag bit(5)and compress tightly to arrester disc(2),the arrester function,stop(the motor shaft)quickly,make electric motor shop turning to move,for the second time connect power supply will repeat above-mentioned action.
High Speed Door Motor And Control Box,High Speed Door Motor,High Speed Door Servo Motor,Variable-Frequency Servo Motor
Shenzhen Hongfa Automatic Door Co., Ltd. , https://www.hfgaragedoor.com