The sand on the construction site can grow a lot of meat
In the urban greening boom, the reuse of waste materials at construction sites has become a new trend. Many succulent enthusiasts have found that the coarse sand on construction sites coincides with the demand for succulent soil. Can this seemingly ordinary building material achieve the healthy growth of succulent plants? This article will deeply analyze the mystery of the symbiosis of sand and fleshy. Feasibility of fleshy planting sand on site 1. Analysis of the characteristics of building sand The coarse sand grains at the construction site are mostly between 1-3mm in diameter and have a natural angular structure, which can effectively increase soil porosity. After professional testing, the water permeability rate of building sand is 5-8 times that of ordinary garden soil. This characteristic just meets the growth needs of succulent root systems to "alternate dry and wet". 2. Experimental data on hidden dangers of pure sand planting show that the fertilizer retention capacity of pure sand substrate is only 1/10 of that of nutritious soil. Continued use will lead to fading and excessive growth of meat. It is recommended to control the proportion of sand to 30%-50%, which can not only ensure drainage, but also maintain necessary nutrients. Detailed explanation of scientific soil allocation plan 1. The gold ratio principle adopts the "3+3+3+1" rule: 30% of peat soil provides organic matter, 30% of red jade soil regulates acid and alkali, 30% of construction sand enhances ventilation, and 10% of rice hull charcoal supplements trace elements. This ratio stabilized the soil EC value in the ideal range of 0.8- 1.2 mS/cm. 2. Advanced formula analysis is for different varieties: Crassulaceae recommendations 5:3:2 (nutritious soil: sand: granules), and twelve volumes apply 4:4:2. The construction sand needs to be washed with clean water three times to remove cement residues. After drying, it has a better effect when used with 5% bone meal. Practical Guidelines for Sand Treatment. Sand collection at construction site should be selected in an area free of paint pollution and sifted to remove fine sand below 2 mm. Steam disinfection is better than exposure. High temperature treatment at 120 ° C for 20 minutes can kill 99% of the pathogens. Adding 3% diatomite before the rainy season can prevent root rot.
Through scientific proportioning and fine treatment, the site sand can not only reduce planting costs by 30%, but also cultivate high-quality meat products with strong roots and compact plant types. Master the characteristics of sand and give waste materials new vitality to horticulture.