1. Forbidden application of nitrate nitrogen fertilizer. For example, ammonium nitrate, ammonium sulfate, potassium phosphate nitrate, phosphorus nitrate, potassium nitrate and compound fertilizer containing nitrate nitrogen are easy to cause nitrate accumulation in vegetables after application. In addition, it is not advisable to apply a chlorinated fertilizer such as potassium oxide or ammonium chloride, which will deteriorate the quality, reduce the yield, and cause the knot.
2. Control the amount of nitrogen fertilizer applied. In order to make vegetables meet the national and international standards for pollution-free, generally 10-12 kg of pure nitrogen per mu is suitable, and the nitrogen fertilizer should be applied deep, and it should be applied with the phosphorus-potassium fertilizer or the ternary compound fertilizer should be applied. Soil, it is best to use fertilizer intubation or combined with drip irrigation under the membrane to reduce root loss, improve utilization, stop 20 days before harvest.
3. Apply ecological organic fertilizer. Ecological organic fertilizer produced by fermentation of livestock manure.
4. Limit the use of hormones. Some vegetable farmers are pursuing high-yield, precocious, morning market, and applying gibberellin (920), ethephon, paclobutrazol and other hormones to promote and ripen, greatly reducing the quality of vegetables. Long-term consumption is extremely detrimental to health.
Schindler Elevator Spare Parts
Schindler Elevator Spare Parts, Schindler Elevator Parts
Schindler was founded in 1874 in Lucerne, Switzerland, and is one of the world`s leading providers of elevators, escalators, and moving walks, as well as maintenance and modernization services. The Group has over 1 000 branch offices in more than 100 countries, as well as production sites and research and development facilities in the US, Brazil, Europe, China, and India.
Schindler manufactures, installs, services and modernizes elevators, escalators and moving walks for almost every type of building requirement worldwide. The company specializes in the latest-technology engineering, as well as mechanical and microprocessor technology products designed and rigorously tested for safety, comfort, efficiency and reliability.
Inspired by the vision of being the best service provider in the industry for its customers, Schindler will continue in the future to develop highly innovative and user-friendly mobility solutions and to deliver these to the world market.
Schindler products can be found in many well-known buildings throughout the globe, including office buildings, airports, shopping centers/retail establishments and specialty buildings.
Schindler 3300
Capacity: 400 kg - 1'125 kg, 5 - 15 passengers
Travel height: up to 60m and 20 floors
Speed: 1.0 m/s and 1.6 m/s
Schindler 5500
Capacity: 630 kg - 2'500 kg, 8 - 33 passengers
Travel height: up to 150 m and 50 floors
Speed: 1.0 m/s up to 3.0 m/s MMR and MRL
Schindler 7000
Global high-rise solution for your landmark building
Single- and double-deck elevators
Capacity: 4'000 kg (single-deck) or 2x 2'250 kg (double-deck)
Travel height: up to 500m
Speed: 10 m/s
Schindler Elevator Spare Parts, Schindler Elevator Parts
CEP Elevator Products ( China ) Co., Ltd. , https://www.zjelevatorcontrolsystem.com