Phosphate fertilizer is essential for the growth and development of fruit trees . More than 60% of the soil in North China is deficient in phosphorus. It is necessary to supplement the phosphate fertilizer in the high yield of orchard, but it should be noted that: 1. Phosphate fertilizer is a slow new fertilizer, which should be mixed with base fertilizer after falling leaves in autumn. Well, in general, the orchard is planted with 250kg of mixed fertilizer and mixed with superphosphate 3-40kg . In addition, 0.4%-0.5% potassium dihydrogen phosphate can be sprayed 2- to 3 times in the middle and late stages of fruit growth to supplement the underground base fertilizer. 2. Phosphate fertilizer should be mixed with nitrogen fertilizer, which can reduce the volatilization and loss of nitrogen and reduce the fixation of phosphorus. The combination of nitrogen and phosphorus is more than a single application, and the fertilizer efficiency can be increased by 69%-73% . Nitrogen fertilizer or phosphate fertilizer alone may cause the imbalance of nitrogen and phosphorus, so that the effects of nitrogen fertilizer and phosphate fertilizer are not fully exerted. 3. Phosphorus is easily fixed in the soil. In order to exert fertilizer efficiency, phosphorus fertilizer should be mixed with organic fertilizer (circle fertilizer, horse cow dung, etc.) to reduce the chance of contact between phosphate fertilizer and soil, thereby improving the effectiveness of phosphorus and improving the efficiency. The quality of organic fertilizer. At the time of application, the two fertilizers were finely mixed and mixed and applied.
Residential Sectional Garage Door
A typical version of an overhead garage door used in the past would have been built as a one-piece panel.The panel was mounted on each side with unequal parallelogram style hinge lifting mechanism. Newer versions of overhead garage doors are now generally built from several panels hinged together that roll along a system of tracks guided by rollers. The door is balanced by either a torsion spring system or a pair of extension springs.A remote controlled motorized mechanism for opening garage doors adds convenience, safety, and security
• Aluminum garage doors are low-cost, light, rust-proof, and feature low-maintenance. They are prone to denting because aluminum is not strong and they are energy-inefficient since aluminum is a highly conductivematerial.
• Fiberglass and vinyl garage doors are composite units, combining a steel core behind a fiberglass or vinyl skin. They have also polyurethane insulated base sections, or other type of foam insulation. These premium doors can match steel garage doors, and be a realistic imitation of wood (namely fiberglass units), but they may be more expensive than steel units.
• Steel doors have become common and are available in a variety of sizes and styles, provide strength and security, are cost-competitive, and may have optional insulating value. Extra strength is available with two or three layers of galvanized steel with a low gauge number (23-24 gauge steel panels).
• Wood garage doors offer aesthetic appeal, but they are high-maintenance and may be expensive. Low-priced wood garage doors may warp and break easily.
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