115 results about "Ecotoxicity" patented technology

The invention discloses a biological control agent for fusarium wilt and a preparation and use method of the biological control agent. The biological control agent comprises the following components of not less than 1*10<7>cfu/mL of cellulose-producing trichoderma viride, not less than 0.5*10<7>cfu/mL of aspergillus niger, 0.8*10<9>cfu/mL of bacillus subtilis and 0.8*10<9>cfu/mL of bacillus mucilaginosus. The prepared biological control agent has an antagonism on antagonism, is capable of increasing disease prevention capability, and has functions of activating soil nutrients, promoting growth of root systems of crops, and inducing the improvement of disease resistance when being applied, thereby improving control effect of fusarium wilt of the crops, and enabling the incidence rate to be lower than 10 percent. The biological control agent can completely replace a chemical agent, has no pollution, residue and biological toxicity during use, ensures that the yield of crops is increased by above 15 percent, and is suitable for controlling fusarium wilt of cucurbit plants such as cucumber, watermelon, muskmelon, bottle gourd and towel gourd, and solanaceae crops such as tomato and eggplant.

The invention discloses an application and adsorption method of tea water extract or peel water extract for adsorbing heavy metal ions. The method is characterized by including the following steps: adding water in the tea water extract or shaddock peel water extract to prepare an aqueous extract solution, filling the aqueous extract solution in a dialysis bag, regulating the pH of a heavy metal ion solution to acidity, and then soaking the dialysis bag in the heavy metal ion solution. In the method disclosed by the invention, natural wastes tea dust and shaddock peel are utilized, the tea water extract or shaddock peel water extract is used for adsorbing the heavy metal ions in wastewater, which belongs to waste utilization, so that the cost is low; compared with other natural adsorbents, the tea dust and the shaddock peel need no special treatment, the preparation process of the aqueous extracts are simple, and the operation is convenient; the tea dust and the shaddock peel have no ecotoxicity, thereby generating no secondary pollution; more importantly, the tea water extract or shaddock peel water extract in the invention has excellent adsorption properties on the heavy metal ions, and can be applied to the treatment of wastewater discharged in such fields as electroplating industry, plastic industry, electronic industry, mining and the like.