Substrate nutrient soil production from organic waste made of dielectric materials must meet several key requirements. First, the total nutrients after fermentation—measured as N + P₂O₅ + K₂O on a dry basis—should generally be below 4%. If this threshold is exceeded, the product can be classified as organic fertilizer instead. Second, the material should remain stable for more than one year post-fermentation. Third, the EC value (electrical conductivity) should be under 4, and the water absorption rate should be above 2. In addition, the raw materials used must be cost-effective and readily available. Common examples include cottonseed hulls, pig manure, cow dung, rice husks, slag ash, sawdust, and waste from mushroom farms, which are all suitable for making organic ecological cultivation substrates. Organic ecological cultivation media have gained attention only in recent decades as environmental awareness has grown. These substrates are typically made by fermenting organic waste, often with the help of functional microbial agents such as "Jinbao" fermentation aids. A small amount of peat, vermiculite, or perlite may also be added to improve structure and performance. The goal is to create a non-toxic, renewable medium that supports modern horticultural practices without harming the environment. The development of these organic substrates hinges on creating a medium that offers stable physical and chemical properties, uses easily accessible and low-cost raw materials, and is environmentally friendly. As concerns over sustainability grow, the challenges associated with traditional materials like rock wool and peat are becoming more apparent. Peat, in particular, is a non-renewable resource, and its overuse has led to restrictions. Moreover, due to uneven distribution, transportation costs from northern peat-producing regions to southern areas have risen significantly. As a result, there's increasing interest in using various organic wastes to produce eco-friendly, soilless cultivation media. This not only helps manage organic waste but also enhances the overall utilization of natural resources, offering both ecological and social benefits. Economic advantages are also being recognized. For example, many flower production units in China are now using Jinbao fermentation agents to turn wood bark and other organic waste into high-quality ecological substrates. This approach has delivered excellent economic results and is gaining widespread support across the industry. JRT OEM Digital Laser Range Finder can measure faster, easier, and more effectively! Our Professional R&D team has over 16 years of experience on the laser and measurement field , so we can supply perfect OEM/ODM service according to user requirement ,and we have made out the mini size module in the world. electronic distance meter,laser measuring tool,best golf rangefinder,Laser Distance Measurer Chengdu JRT Meter Technology Co., Ltd , https://www.jrt-measure.com
The handheld laser distance measurer can measure distance,area,volume and pythagorean, and can switch to meter/feet/inch mode as you like.
Specially, there is three best-sale styles:
* Mini: D30 with our mini module U81 in it achieved the smallest size Laser Distance Meter in the world, which outlook is the same as a key,quite portable and cute. USB chargable design.
* Bluetooth: Diy Laser Range Finder With Bluetooth has been used to measure distances accurately in the both daily usage and industry application. The handheld laser distance measurer is widely used in variety areas, like project surveying, construction measuring, railway application etc.
* Longest: 150m equipped with a precise,easy- to-read digital LED display, which metal case brings you great hand feel.Power Supply: 2 x 1.5V AAA batteries.