It is understood that root rot occurs in the production of grafted cucumber, which affects the yield and benefit of cucumber. The following measures can be taken to prevent and control this phenomenon:
1. Do a good job in disinfecting the seedbed. In the high temperature season, the greenhouse is closed in sunny days, the seedling bed or the nursery greenhouse is covered with plastic film, and the soil is disinfected by solar high temperature suffocation. The bed soil is treated at 50 °C for 10 minutes, which can kill most of the disease in the soil. The pathogen can greatly reduce the incidence rate; for the heavily affected plots or seedbeds, the pesticide fungicides carbendazim, diclosan or methyl thiophanate can be used, and the drug and soil are formulated into a medicinal soil at a ratio of 1:10, before sowing or planting. The soil is disinfected by the soil, and the bed soil treatment can also be carried out with drugs such as Luheng No. 1 (soil fungus, dysentery).
2. Strengthen management and improve resistance. Before the planting, the soil was tested and fertilized, and the organic fertilizer was added. After planting, the watering is properly controlled in the early stage to increase the ground temperature and promote root development. After the melon is added, the number of watering is appropriately increased and the fertilizer is applied in time to prevent the premature aging of the plant. Pay attention to ventilation and dehumidification.
3. Use resistant rootstock varieties. For example, the new varieties of yellow seed pumpkin rootstocks such as Oasis Angel and Shengen, which are jointly selected by the Economic Crops Research Institute of Hebei Academy of Agricultural and Forestry Sciences and Tangshan Hengfeng Seed Industry.
4. Drug control. In the early stage of the disease, 30% of the 5% of the carbaryl carbendazim solution and 10% of the phenyl ether carbazole aqueous dispersing granules were 1500 times, and the root of each solution was 250 ml.
Grafting cucumber root rot occurs mostly in the cucumber production field grafted with black seed pumpkin. It grows normally before the cucumber begins to harvest, and the cucumber begins to develop after harvesting. Therefore, it is very important to do disease prevention work in advance.
More pesticide knowledge , please pay attention to China Pesticide Network
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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.hffastdoor.com