60results about How to "Avoid Pesticide Residues" patented technology

The invention mainly relates to the field of plantation and discloses a culture medium for Dendrobium officinale. The culture medium for Dendrobium officinale is prepared from the following raw materials: leftovers of domestic fungi, pumpkin pith, shaddock peel, pine needles, cattail, Utricularia bifida, ceramsite, brewer's yeast, bitter apricot kernel extract and Chinese peashrub root extract. According to the invention, the raw materials are widely available; the prepared culture medium has balanced nutrients, is air-permeable, water-retaining and fertilizer-retaining and enables the survival rate of cultured Dendrobium officinale to reach 100%, output to be increased by 16.8% and economic income to be increased by 14.3%; through refrigeration, stir-frying and fermentation of the medium, nutrients and active ingredients can be effectively extracted, and the medium can provide abundant raw materials needed in growth of Dendrobium officinale, is capable of preventing bacteria, killing insects and inhibiting generation of plant diseases and insect pests, reduces and even avoids usage of pesticides, protects Dendrobium officinale from pesticide residues and improves the grade of Dendrobium officinale; and a plurality of plant extraction agents are added into the medium, so growth of Dendrobium officinale is benefited, the harvesting period of Dendrobium officinale is 20 to 25 d earlier compared with the prior art, and economic income is increased.

The invention relates to a nutrient fertilizer for growth of crops and particularly relates to a mineral nutrient suitable for cultivating ginseng, American ginseng or other crops and a preparation method of the mineral nutrient. The mineral nutrient is prepared from granulating slag, sulfuric acid, hydrochloric acid, filler and water according to the specified weight percentage. The mineral nutrient disclosed by the invention contains a large amount of elements and trace elements for growing and developing plants and rare elements and can be used for supplementing the nutrition in all rounds and supplementing the trace elements of soil so as to meet the growth requirement of the ginseng. Industrial waste materials are taken as raw materials and are abundant, so that the waste utilization can be realized, the cost of products is reduced and the environment friendliness is facilitated. In the aspect of process, inorganic salts generated by the sulfuric acid and the hydrochloric acid according to the proper mixture ratio can be used for better promoting the growth of plants, so that the utilization rate of the mineral nutrient is greatly increased and the excessively-remarkable effect is obtained; and in addition, the defect of the reduction of the biological activity caused by a single sulfate component and an alkaline reaction and a redox reaction of the soil is avoided. The test result shows that the yield of the ginseng in unit area can be increased by over 15 percent.

The invention relates to a special biological pesticide mixture used in a lotus root field and a preparation method thereof. The biological pesticide mixture comprises the following components: ethyl spinosyn, theasaponin, a wetting agent, a dispersant, an adhesive and a carrier. The preparation method for the biological pesticide mixture comprises the steps of mixing, crushing, kneading, granulation, drying, sieving, inspection and obtainment of a finished product. The biological pesticide mixture has the advantages of high efficiency, low toxicity, low residual, an effect on controlling Donacia provosti and Prodenia litura of more than 93%, high usage security, simple and handy operation, capacity of natural degradation and good environment compatibility, thereby avoiding pesticide residual in the lotus root product; and the preparation method has the characteristics of advanced processing technology, simple and handy operation, no discharge of three wastes (waste gas, waste water and industrial residue) and high usage security.