1, concentration The appropriate concentration of spraying concentration received good results. If the concentration is too high, it is not only unhelpful but harmful. Usually boric acid or borax 0. 05% -0. 25%, ammonium molybdate 0. 02% -0. 05%, copper sulfate 0. 01% - 0. 02%. If high concentration is required, it should not exceed 20% of the specified concentration. 2, period In order to reduce the loss of trace fertilizer in the spraying process, it is better to choose cloudy spraying, and sunny days should be sprayed in the afternoon to dusk in order to maximize the moistening time of the fertilizer solution on the stems and leaves to facilitate absorption. 3, dosage The amount of trace elements required for vegetables is very small, and various trace elements are narrow from the missing to the critical area of ​​excess. A slight lack or excess may cause damage. Usually a mu of 40-75 kilograms of fertilizing solution can make the stems and leaves of the vegetables evenly wet, and avoid repeated application. 4, the number of times depending on the growth and development of vegetables, usually 2-4 times. 5, mixed spray Reasonably mixed spraying of micro-fertilizers, or mixed spraying with other fertilizers or pesticides, can play a role of “multi-effectâ€, but it is necessary to clarify the physical and chemical properties of fertilizers and pesticides to avoid chemical reactions and reduce fertilizers (drugs). )effect. Probiotics are a class of active microorganisms that are beneficial to the host by colonizing the human body and changing the composition of the flora in a certain part of the host. By regulating the immune function of the host mucosa and system or by regulating the balance of intestinal flora, promoting nutrient absorption and maintaining intestinal health, resulting in the production of single microorganisms or mixed microorganisms with well-defined composition that are beneficial to health. Probiotics,Probiotic Efficacy,Probiotic vitamins,Probiotic Health Supplements YT(Xi'an) Biochem Co., Ltd. , https://www.ytlinkherb.com