40results about How to "No residual pollution" patented technology

The invention belongs to the technical field of phytology and ecology and discloses an oxidation-reduction potential regulation and control device for a plant root layer, a culture device and a regulation and control method. The culture device comprises a container with the upper end opened, a cylinder arranged in the container, a soil isolation net and a planting cylinder, wherein the space between the outer side of the cylinder and the inner side of the container are divided into a plurality of zones through vertical interlayers which extend in the radial direction of the cylinder; and the soil isolation net is fixed on the adjacent interlayers. The regulation and control device comprises the culture device and a plant root layer oxidation-reduction potential regulation and control system, wherein the plant root layer oxidation-reduction potential regulation and control system comprises an oxidation-reduction potentiometer, gas supply equipment, liquid supply equipment, a power supply circuit and a switching circuit. The regulation and control device can automatically regulate the soil oxidation-reduction potential to a set value through the gas supply equipment and / or the liquid supply equipment and maintain the soil oxidation-reduction potential to be within a set range, so that regulation and control of the plant root layer oxidation-reduction potential are realized; and besides, the integrity of a root system is kept during sampling.

The invention discloses an air-energy irrigation sterilization multi-purposed machine comprising an ozone generation device, water-gas mixers, and an oxygen-nitrogen separator. The ozone generation device is connected to the oxygen-nitrogen separator through a gas pipe. An oxygen output end and a nitrogen output end of the oxygen-nitrogen separator are respectively connected to the water-gas mixers. According to the invention, ozone water is used for disinfecting and sterilizing, such that no chemical component is used, and no residue pollution is caused. The machine is environment-friendly and healthy. Also, planting environment pH value can be regulated to a good condition. With the machine, nitrogen fertilizer can be prepared while the ozone water is prepared, such that resource is effectively utilized. Nitrogen fertilizer can be applied to crops while sterilization is carried out, such that large-scale farmland planting works can be realized with high efficiency, planting cost can be effectively reduced, and labor consumption can be effectively reduced.

The invention discloses a meat duck environmentally-friendly breeding feed additive. For solving the problems of medicine resistance, medicine residue and environment pollution of the conventional feed additive, the invention provides a composite feed additive which is prepared from various natural traditional Chinese medicinal herbs including houttuynia cordata, philippine violet herb, coptis chinensis, bupleurum, sweet wormwood, notopterygium root, astragalus and tangerine peel, and probiotic. According to measurement by spectrophotometry, all of the selected traditional Chinese medicine herbs including the houttuynia cordata, philippine violet herb, coptis chinensis, bupleurum, sweet wormwood, notopterygium root, astragalus and tangerine peel can promote the propagation of the lactobacillus in the probiotic to different extents and have the effects of preventing serositis of duck and improving immunity of duck and the function of a lactobacillus synergist. The feed additive has theadvantages of synergetic effect, no residue and environmental friendliness.

The invention discloses a highly arsenic-resistant thiocyanate-degrading bacterial strain and its application. The bacterial strain is identified as Pseudomonas putida, numbered TDB-1, and is preserved in the General Committee of the China Microorganism Culture Collection and Management Committee. Microbiology Center, the deposit number is CGMCC NO.21602. The strain has the characteristics of high arsenic resistance, and the inoculum prepared by the strain can effectively degrade thiocyanide in a high-concentration arsenic environment, and the degradation speed is fast and the effect is good.