One, as long as the "opening of the" can be sprayed, wrong! When some farmers spray fertilizers on crops and vegetables, they prefer to use several types of foliar fertilizers together to make them more effective. Many farmers think that whatever fertilizers are used, they can be used as long as they are “openedâ€. Foliar spraying is actually not the case. Such as highly volatile fertilizers such as ammonia, ammonium bicarbonate, if used as foliar spray, high temperatures encountered after spraying will cause damage to the crops, burn the leaves, so can not be used for foliar fertilizer. In addition, many micro-fertilizers cannot be mixed with pesticides. Acidic fertilizers and alkaline fertilizers cannot be mixed and sprayed. Targeted fertilizer-fertilizer and fertilizer-medium compounding should be used to achieve "one spray and multiple effects." The effect will otherwise be counterproductive.
Second, spraying the higher the better, wrong! Some farmers believe that the greater the concentration of foliar spray fertilizer solutions, the better. This is incorrect. Such as high-nitrogen water soluble fertilizer should only be less than 1%, potassium dihydrogen phosphate should only be less than 1%, more in the amount of trace element fertilizer such as calcium alkoxide fertilizer, sugar calcium boron fertilizer, zinc alkoxide, chelating Iron, chelated copper, etc. should only be kept below 0.2%. In case of over-concentration, it will not only not produce fertilizer, but will cause dehydration and withering of the crop leaves, resulting in fertilizer damage, which is similar to phytotoxicity and poisoning. Generally sprayed to the front and back of the blade spread fertilizer solution began to drop. Excessive fertilizer solution will result in increased costs and waste of fertilizer.
Third, any time can be sprayed, wrong! Some farmers' foliar fertilizers cannot catch the key spraying period and therefore cannot achieve the desired results. Some farmers believe that spraying fertilizer at any time and at any time during the growth and development of plants is actually not correct. Foliar spraying is best carried out during the growth transition period of the crop, and the spraying time is at least 20 days apart. In general, it is sprayed 2 or 3 times per season. Different plants and different fertiliser foliar spray fertilizers have certain differences in suitable periods. Rice, corn, wheat and other cereal crops should be fertilized in the booting, flowering, and filling stages. Soybeans, peanuts, broad beans, beans and other legumes should be sprayed during flowering and podging. Cotton should be sprayed during flowering. Molybdenum should be sprayed before flowering. Boron and zinc fertilization are best when the plants are sprayed at the early flowering stage. From the time of spraying the fertilizer, it should be on a cloudy day with no wind or sunny morning, after the dew on the leaf surface is dried, to avoid the high temperature period in the hot sun, and the spraying effect is good in the morning and evening.
Nucleic Acid Extraction Reagent Kit 64T(auto)
[Intended Use]
For isolation and purification of high-quality viral DNA / RNA from serum, plasma, swab preservation solution or various virus preservation solutions. Only available for lab on IVD application.
[Testing Principle]
During the nucleic acid extraction process, the magnetic bead adsorption principle is used to adsorb, transfer, and purify nucleic acids through special magnetic beads to automatically complete the nucleic acid extraction.
RNA purification kit,DNA purification Kit,Covid purification reagent,RNA purification reagent kit,nucleic acid extraction kit
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