Tomato production of 1000 kg of tomatoes requires pure nitrogen 3.85 kg, phosphate fertilizer (diphosphorus pentoxide) 1.2 kg, potassium fertilizer (potassium chloride) 4.4 kg, calculated according to the yield of 5000 kg per mu, the application of high-quality farmyard manure 5000 kg, phosphate fertilizer 50 kg before planting . When the first ear is swollen to the size of egg yolk, the first top dressing should be carried out. The ear is applied with 18-20 kg of pure nitrogen, 15-16 kg of phosphate fertilizer, and 16-17 kg of potassium fertilizer. The second, third and fourth ear fruits are swollen to the eggs. When the size of yellow is large, it should be topdressed in time. In this case, the amount of fertilizer needs to be large, and the amount of topdressing should be increased appropriately. Each top dressing should be combined with watering. It is also possible to use a 0.35% chemical fertilizer (such as potassium dihydrogen phosphate) in combination with a disease-preventing drug for foliar application, or a mixture of sitting fruit and fruit.
ã€Comment】 ã€Print this article】 ã€Close this page】 ã€Large, medium and small】
PVC High Speed Door
PVC High Speed Door are designed for indoor use and ensure rapid handling operations between different areas that should remain separated. These safe and efficient industrial doors are made of a shaped steel frame and covered with PVC. These high speed doors are safe and efficient and consist of a shaped steel frame covered with PVC. Safety is ensured by their photocells and barriers.
High speed doors protect us from harm, save energy and help us to separate processes for optimal productivity. A high speed door's most important job is to simply open and close quickly and safely every time you need it.
The high speed pvc roll shutter door require high strains, caused by the high operating speed and the frequency of openings, have to be taken into account during construction. In the same way, basic conditions like size and installation location add up to considerable requirements regarding safety and control technique.
PVC High Speed Door,Large PVC High Speed Door,Transparent High Speed Door,Great Performance High Speed Door
Shenzhen Hongfa Automatic Door Co., Ltd. , https://www.highspeedshutterdoor.com