46 results about "Soil crust" patented technology

The invention discloses fertilizer added with perlite, and a preparation method thereof. The fertilizer is prepared from the following raw materials by weight: 35-50 parts of perlite, 65-75 parts of urea, 50-80 parts of monoammonium phosphate powder, 45-60 parts of potassium chloride, 15-20 parts of zinc sulfate, 5-7 parts of polyacrylamide, 4-6 parts of sodium lignin sulfonate, 10-12 parts of attapulgite powder, 200-300 parts of straws, 150-200 parts of livestock manure, 20-30 parts of phosphorite powder and 10-12 parts of a soil activator. A soil conditioner provided by the invention comprises a jade component which contains a lot of microelements and is beneficial to human body, can effectively absorb and solidify toxic heavy metal elements in the soil, reduce absorption of the heave metal elements by the crop, and can increase crop output. High adsorbability of the perlite enables three main elements required by a plant to release slowly, can improve soil crust, and increase soil loose permeability and capacity of retaining water and fertilizer. A production process has no three wastes (waste gas, waste water and industrial residue).

The invention discloses a measuring method for the algae biomass in a biological soil crust, and relates to the field of biology. The method includes the steps of sampling of an algae crust sample, sieving, cleaning, algae cultivating, chlorophyll a and chlorophyll b measuring, standard curve drawing and algae biomass measuring (natural development). In the algae cultivating step, cultivating is carried out through BG11 cultivating media, and use algae are mixed algae. In the chlorophyll a and chlorophyll b measuring step, chlorophyll is extracted with a mixed solution method, wherein extracting solutions comprise absolute ethyl alcohol, acetone and water in the ratio of 4.5 to 4.5 to 1. The relationship between the gross of the chlorophyll a and the chlorophyll b of the algae and the algae biomass is regressed through a standard curve. Measuring of the natural developing algae biomass is converted through the standard curve between the gross of the chlorophyll a and the chlorophyll b and the cultivated algae biomass. Direct comparison between the algae crust and the vascular plant biomass is achieved, and a reliable approach is provided for more accurately calculating the productivity of the algae crust and the effect of the productivity in an ecological system.

The invention provides a novel device used for culturing the wetland algae crust and a method for culturing the algae crust. The invention relates to an experimental device for culturing the algae in the soil crust and a method for culturing the algae crust. The invention solves the problems in the existing method that the cultured algae always does not meet the experimental requirements and correspondingly results in the failure of the experiment due to the factors of lighting, blasting, temperature, microbial contamination and the like because the conical flask is exposed to the manual climatic box environment. The device is composed of an algae incubator, an oxygen reactor and a communicating device, wherein the algae incubator is composed of a conical flask and a perforated rubber stopper; the oxygen reactor is composed of a jar and a perforated rubber stopper; the communicating device consists of two glass tubes. The culturing method comprises the following steps: step 1, putting the crust samples into the conical flask; step 2, pouring the Na2O2 powder into the jar; step3, connecting the conical flask and the jar by the glass tubes; step 4, putting the conical flask and the jar into the artificial culture box to culture.

The invention discloses a rotary soil crust collection device used in a karst region. The rotary soil crust collection device comprises a scraper, a sample bag and a positioning rod. One end of the scraper is rotatably connected with the positioning rod; the scraper comprises a scraper holder and a blade; the scraper holder is fork-shaped; the both ends of the blade are connected with the scraperholder; and an opening of the sample bag is connected to the scraper holder in a sleeving manner. By rotating the scraper, the rapid collection of soil crust can be realized; the crust thickness is uniform; and the test is more accurate. The crust sample can be collected into the sample bag by only pressing the blade on the ground to move forwards. The operation is greatly simplified and the collection efficiency is improved. The rotary soil crust collection device has the advantages such as the simple structure, convenient operation and low cost.

The present invention relates to a process for restoring disturbed arid land soil crust. According to the process, site-sourced biological soil crusts (BSC) serve as sources for liquid suspension inoculants onto degraded arid lands. The BSC are gathered from near the disturbed site, and organisms from them are cultured, replicated and multiplied many times, preferably off-site. Then, this inoculant resulting from the indigenous population is distributed live and active in a liquid suspension over the entire area of the disturbed site.

An environmentally friendly method is provided for supporting the formation of microfloral soil crust, particularly in disturbed or contaminated areas, by treating soil with suspension containing microfloral propagules collected with runoff water on undisturbed sites. The method reduces spreading of contaminations from afflicted areas. Also provided is a composition of microfloral propagules for supporting the soil crust formation, which composition is in the form of suspension or powder.

The invention relates to a method for distinguishing biological soil crust and subsoil basic respiration of biological soil to test the contribution of components (biological soil crust and subsoil basic respiration) of soil to the soil respiration. The method comprises the following steps that firstly, a biological soil crust layer is carefully separated from the soil surface and arranged in a screen with 150 meshes, the subsoil of the biological soil crust is heated for 3 h at the high-temperature of 160 DEG C, and after the subsoil temperature recovers to the indoor temperature, the screen with the biological soil crust layer is placed in the soil surface layer. The method has the advantages that operation is easy, separation is carried out through a physical method and is thorough, pollution does not exist, and cost is low; according to the method, the soil water content of components of the soil cannot be changed after natural raining, a processed soil sample testing environment is close to natural conditions, and the accuracy of the test result is high; the interference in soil is small, and the measurement result is close to the real value; continuous monitoring can be carried out under the field condition. By means of the method, the soil respiration rate that the biological soil crust covers the components of the soil can be accurately tested.