High-yield fertilization points of peas
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.
Residential Sectional Garage Door,Automatic Metal Sectional Garage Door,Standard Lift Garage Door Drum,Polyurethane Foam Garage Door Shenzhen Hongfa Automatic Door Co., Ltd. , https://www.hongfadoor.com
Second, the characteristics of fertilizer. During the vegetative growth stage of peas, the growth amount is small, and the nutrient absorption is also small. After flowering and sitting on the pod, the growth amount increases rapidly, and the nutrient absorption amount also increases greatly. The absorption of nitrogen, phosphorus and potassium in the peas is nitrogen. The highest amount of potassium, followed by potassium, the least phosphorus. Although the root nodules of peas can fix nitrogen in soil and air, they still need to rely on soil nitrogen supply or nitrogen fertilizer supplementation. Nitrogen fertilizer should always consider the nitrogen supply status of the nodule. In the early stage of growth, if the nitrogen is applied too much, the nodule formation will be delayed, and the growth of the stems and leaves will be too lush to cause the flowers to fall into the pods. In the harvest period, the nitrogen supply is insufficient, then the harvest period Shortened and reduced production. Increasing the application of phosphorus and potassium fertilizer can promote the formation of pea nodules, prevent the growth of disease, and enhance disease resistance.
Third, fertilization technology
1. Base fertilizer: The main root of pea is developed early and rapidly. Before the seedling has been unearthed for 6 days after sowing, the main root is elongated by 6-8 cm. When the seedling has just been unearthed 10 days after sowing, there are more than 10 thick roots, just 20 days ago. When the two compound leaves are unfolded, the main root can be as long as about 16 cm. Therefore, the base fertilizer should pay special attention to early application. The spring sowing in the north should be applied to the base fertilizer during the autumn ploughing. The southern autumn sowing should also apply the base fertilizer when planting the soil before sowing to ensure the seedlings and the seedlings. Generally, organic fertilizer is applied at 3000-5000 kg per mu, 25-30 kg of superphosphate, 10 kg of urea, 15-20 kg of potassium chloride or 100 kg of ash.
2, top dressing: According to the growth of peas, the first top dressing can be carried out at the beginning of flowering, generally 5 kg of urea, 5 kg of potassium chloride or 15-20 kg of ternary compound fertilizer, combined with watering; the second top dressing can be After sitting on the pod, 7.5 kg of urea per acre, 7.5 kg of potassium chloride or 20-25 kg of ternary compound fertilizer, combined with watering.