1. Apply enough organic fertilizer. The addition of organic fertilizer is an important measure in the cultivation of high quality rice and is the basis for achieving high quality and high yield. Organic fertilizer is mainly used as the base fertilizer. Generally, 40-50 tons of succulent mature soil per acre is applied before ploughing, or 40-50 kg of cake fertilizer. In addition, 40-50 of human and animal manure can be applied as a noodle fertilizer before ploughing and watering to ensure the nutrient needs of the seedlings after they are transplanted.
2. Control the amount of nitrogen fertilizer. Excessive application of nitrogen fertilizer will not only cause ineffective tillering, greed, lodging, and intensification of pests and diseases, but also lead to more empty mites and lower seed setting rate, which will affect rice yield. Nitrogen fertilizer is mainly used as top dressing. Generally, 6-7 kg of urea per mu is applied after transplanting rice. The second time is 13-5 days after transplanting, and 4-5 kg ​​of urea per mu is combined with the cultivated field to benefit the hair. Hey. In the medium term, attention should be paid to water control and fertilizer control. Only the second and third types of seedlings with poor growth should be used to supplement some balanced fertilizers. In the later stage, the seedlings should be supplemented with 3-5 kg ​​of grain fertilizer.
3. Increase the application of phosphorus and potassium fertilizer. Phosphate fertilizer is suitable for base fertilizer, and potassium fertilizer is better for topdressing. Generally, 20 kg of phosphate fertilizer is applied per acre in a field with sufficient organic fertilizer. As a potash for potash fertilizer, 3.5-5 kg ​​of potassium chloride can be applied per mu. Spraying potassium dihydrogen phosphate in the late stage of rice can promote the grouting and firming. Generally, it is sprayed once in the late stage of flowering and the filling stage. 150 g of potassium dihydrogen phosphate per acre and 50-60 kg of water are sprayed in the evening.
4, the leaf surface to apply micro-fertilizer. Trace elements such as zinc, manganese and boron can improve the supply of oxygen in rice roots, enhance the resistance of rice plants, improve the disease resistance of plants, promote the development of roots in the later stage, prolong the functional period of leaves, prevent premature aging, and accelerate the development of flowers. Increase the amount of pollen, promote the pollen germination, and help to increase the rate of rice emergence; it can also promote the large number of spikes, increase the seed setting rate and the grain filling degree, thereby increasing rice yield. According to the test, in the case of the same cultivation and management measures, the application of trace element fertilizer can increase the yield by 40-50 kg per mu, and the application of trace elements such as zinc, manganese and boron in rice is generally carried out twice. The first time in the peak period, the second time in the completion of the young spike differentiation. The application rates of zinc, manganese and boron fertilizers are 100-125 grams per mu, and the spraying concentration is: one thousandth of zinc; manganese and boron are each five ten thousandths. The application of foliar fertilizer requires a cloudy or sunny afternoon to be sprayed on the front and back of the blade.
Author: HU Qi Mountain
Source: "Agricultural Resources Guide"
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.hffreezerdoor.com