As the fruit trees are planted year after year, more or less they will be infected with pests and diseases. In winter, it is the best time for insecticidal sterilization. How to spray fruit trees in the winter? Spray sterilization, the ratio of the sprayed ferrous sulfate: quicklime: water = 3:3:100 can be. Spray fine spray, spray uniform, with the distribution with the spray. It should be noted that rain can not be sprayed on a rainy day, cannot be sprayed on a windy day, and cannot be sprayed when there is dew in the morning or in the evening, nor can it be sprayed in hot weather, otherwise it is easy to cause phytotoxicity or reduce the efficacy of fruit trees, preferably at 8 to 10 o'clock, or in the afternoon. Spray after 3 o'clock. In order to eliminate and eliminate the breeding and breeding sites for pests and diseases, after the fruit trees have entered a dormant period, the orchards must be thoroughly cleaned, and the dead leaves and rotten leaves with diseases and insect pests should be cleaned and burned or buried deeply.
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We adopt a comprehensive classification method, which is divided by the ionicity of surfactants as follows which can all be provided by Insen Biotech: 1. Anionic surfactant: stearic acid, sodium dodecylbenzene sulfonate. 2. Cationic surfactant: quaternary ammonium compound. 3. Zwitterionic surfactants: lecithin, amino acid type, betaine type. 4. Non-ionic surfactants: fatty acid glycerides, fatty acid sorbitan (Span), polysorbate (Tween).
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