Test tubes, Pipette guns, Centrifuge Tubes, etc. in the laboratory need to be organized. Therefore, there is a need for laboratory table top racks that are easy to clean, store, and transport. laboratory rack plastic,rack for laboratory,storage rack for laboratory Yong Yue Medical Technology(Kunshan) Co.,Ltd , https://www.yonyuetube.com
Winter fertilization fruit trees and winter fertilizers are mainly organic fertilizers such as cattle fat, pig fat, oil dry, and grass ash. Fertilization method: mainly based on annular ditch fertilization and strip ditch fertilization, ditching under the canopy drip line, the depth is to see the tree roots (generally 25-35 cm). The amount of fertilization: 1-2 kg of organic fertilizer per plant, plus 0.3-0.5 kg of chemical fertilizer (carbon ammonia); the result is 3-5 kg ​​of organic fertilizer per plant, plus 0.5-1 kg of phosphorus and potassium fertilizer.
In addition, for saplings, fruit trees rich in sap, such as persimmons and walnuts, attention should also be paid to anti-freezing management through measures such as soil cultivation through tree trays, whitening of trunks, and saplings.
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