Seed selection and treatment: Try to buy seeds from regular units, do not leave seeds of your own (yield will be very low); select good varieties with good disease resistance (such as: hybrids); choose varieties suitable for planting in Changsha (eg: 8~ In October, cabbage, cabbage, spinach, white radish, carrots, garlic, chives, spinach, etc. can be grown; shallow root crops are selected; rotations of different crops are cultivated (not conducive to the survival and infection of germs); use of warm water or three Chloroisocyanuric acid disinfection (Note: When the seeds are sterilized with warm water, they need to be soaked in warm water at 55°C for 15 minutes in an open container. Simultaneously, hot water at 60°C is continuously added in and out to keep the seeds at 55°C. temperature).
Fertilizer selection and treatment: The use of commodity organic fertilizer, it is best to use organic or organic certified organic fertilizer; organic fertilizer as much as possible as a base fertilizer (optional granular, is conducive to the full absorption of plants.); The use of biological fertilizer Appropriate use of chemical fertilizers (leaf vegetables can be added nitrogen fertilizer, eggplant crops add potassium fertilizer, root crops add phosphate fertilizer); top dressing must be deep application; appropriate use of foliar fertilizer.
Prevention and control of diseases and insect pests: artificial insect catching; use of biological pesticides to prevent insects (such as: Bacillus thuringiensis, berberine, Beauveria bassiana, etc.); selection of some low-toxicity chemical pesticides (Indigotine, chlorantraniliprole, chlorfenac, etc.) In the rainy season, soil moisture should be controlled. It is best to stop the soil from drying and there must be no accumulation of water on the soil. Insects are used in the season of spawning. In time, the old leaves in the roots are removed and ventilation is maintained between the crops. The diseased plants are removed in time and health is eliminated. Disinfect the plants (eg, hymexazol, dimethomorph, phenacrazole, etc.)
Fertilizer selection and treatment: The use of commodity organic fertilizer, it is best to use organic or organic certified organic fertilizer; organic fertilizer as much as possible as a base fertilizer (optional granular, is conducive to the full absorption of plants.); The use of biological fertilizer Appropriate use of chemical fertilizers (leaf vegetables can be added nitrogen fertilizer, eggplant crops add potassium fertilizer, root crops add phosphate fertilizer); top dressing must be deep application; appropriate use of foliar fertilizer.
Prevention and control of diseases and insect pests: artificial insect catching; use of biological pesticides to prevent insects (such as: Bacillus thuringiensis, berberine, Beauveria bassiana, etc.); selection of some low-toxicity chemical pesticides (Indigotine, chlorantraniliprole, chlorfenac, etc.) In the rainy season, soil moisture should be controlled. It is best to stop the soil from drying and there must be no accumulation of water on the soil. Insects are used in the season of spawning. In time, the old leaves in the roots are removed and ventilation is maintained between the crops. The diseased plants are removed in time and health is eliminated. Disinfect the plants (eg, hymexazol, dimethomorph, phenacrazole, etc.)
The valve is a series of gas emergency shut off solenoid valves, specially designed as gas pipe breaker for emergency use. It can be connected with gas leaking detection sensor, fire alarm circuit or other intelligent sensor modules so that on site or remote shut down on gas supply (manually or automatically) is possible, hence ensuring the safety on gas usage. The valve features an auto-close when strong vibration is detected. After close, manual operation is required to turn on the valve. This feature meets safety regulations in the event of an accident.
Gas Cut Off Valve,Air Solenoid Valve,3 Way Solenoid Valve,Sprinkler Valve Solenoid
Rictron Industrial Co., Ltd , https://www.szrictron.com