â‘ fertilizer Features: balanced nutrition to fully meet the nutritional needs of crops and soil conditioning; water-soluble fertilizers applicable to all types of soil and crops; various cash crops especially bogey-effective application of the general increase of 20% on chlorine crops --30%.
   2 fertilization recommendations (kg / mu): crop base fertilizer (composite fertilizer) topdressing (urea) topdressing period tobacco 30 - 35 about 15 planting 30 days cotton 30 - 35 about 20 flower age potatoes 28 - 32 about 10 before flowering watermelon 40 - 50 about 15 young fruit tea 60 - 70 about 20 minutes 2-3 times rice 25 - 30 about 20 spikes differentiation period wheat 30 - 35 about 20 minutes 蘖 period vegetables non-leaf vegetables annual compound fertilizer 70-90 kg About 30% of the base fertilizer is used, and 70% of the base is divided into 2-3 times. Fruit trees of mature trees can be applied 1.5-2.0 kg of compound fertilizer per plant after autumn harvest, pre-flowering and fruit-bearing period .
   3 Note : Fertilizer should be applied under the seed and should not be directly contacted to avoid burning ; if the compound fertilizer is applied on legumes, phosphate fertilizer should be added.
Centrifuge tubes are used in laboratory centrifuges, machines that spin samples in order to separate solids out of liquid chemical solutions. The centrifuge tubes can be made of glass or plastic, and resemble miniature test tubes with tapered tips. They are mainly used in series test like the centrifuge of nucleic acid
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