Simple high-efficient soilless culture technique

Abstract

Soilless culture must be performed in an intelligent greenhouse with controlled temperature, controlled humidity and controlled light. All nutrients required for growth of plants must be artificially prepared by medicines. Investment in a unit area is huge, and great nutrient solutions and energies are consumed in production, thus the product cost is high; and product quality is low if the plant is cultivated by a nutrient solution prepared by chemical agents. The key and the purpose of the invention lie in seeking a 'nutrition-rich substrate' which is made from reproducible sawdust, straws, saccharified residue, mushroom compost dregs and the like and has complete, rich and rationally coordinated nutrition and good permeability and high water content to replace the artificially prepared chemical nutrient solutions to provide nutrition for the plants so as to perform the soilless culture, reducing investment in equipment and facilities for the soilless culture, reducing the production cost and improving the product quality.

Description

Technical field

[0001] The simple and efficient soilless cultivation technology belongs to agricultural crop cultivation, plant nutrition and facility agriculture. technical background

[0002] Soilless cultivation is the main method of factory agriculture. All the nutrients needed for plant growth are provided by artificial preparation of chemicals. It is necessary to establish a firm culture tank to hold the nutrient solution and plants, and the plants need to be used in the culture tank. Foam boards, stones, sand, ceramsite, perlite, vermiculite or rock wool, etc. to fix, the nutrient solution needs to be pumped into the culture tank with a distributor and a circulation pump for recycling, and an automatic device for pH and conductivity is also needed. Control the pH and salt concentration of the nutrient solution. When the salt reaches a certain level, it must be discharged from the culture tank to cause waste and environmental pollution. In this way, soilless cultivatio...