Due to the recent excessive rain, the roots of the seedlings in the field are immersed in water for a long time, and the anaerobic respiration is too severe, which seriously affects the occurrence of roots, and the disease resistance is greatly reduced, which causes the root diseases to occur easily. Especially the cutting seedlings, the roots themselves are relatively fragile. It is more likely to cause disease outbreaks; due to high humidity in the field, it is also easy to cause various rotten leaf diseases (anthrax, leaf spot, bacterial leaf spot). After the rain, the weather mainly controls root rot, blight and leaf rot. According to the condition of nursery stock, the following measures can be taken: First, the prevention and treatment of root rot and blight 1, 24% full spike 3 packs + American Dabao 4 packs 2,99% hymexazol agent rooting powder 3 packet +863 package 4 3, 40% support 1 package + speed rooting seedlings 4 packs 4, 50% dry net 4 packs + active rooting agent 1 pack 5, 16.0004% disease clear 1 package + dead seed savior 1 bottle 6, 50% root Pubao 1 pack + protective seedling strong root agent 1 pack One of the above formulas, 100 kg spray per acre Second, the prevention and treatment of rotten leaf disease, leaf spot disease formula 1, 56% Ami colorful 4 packs + 65% New Zealand 1 pack 2, 80% times 4 pieces of music + 65% zinc selenium 1 package 3, 40% music spectrum 3 packs + 65% virginia 1 pack 4, 40% Zambier 4 packs + 80% Dyson Zinc (Bao Ye) 1 pack 5, 30% love seedlings 4 packs +65% good living spirits (30g) 4 packs 6, 46% Trier 1 package One of the above formulas + foliar nutrient (Green Kang Zhuang, Knopfeng General, Yi Pu Lang), 100 kg spray per acre Third, matters needing attention Promote morning and evening application and avoid high temperature periods. At present, in the process of isolation and preparation of various stem cells from various tissue sources, Centrifuge Tubes with a volume of 15ml and 50ml are used. centrifuge tube rack bulk,tube rack for centrifuge,rack for centrifuge tube Yong Yue Medical Technology(Kunshan) Co.,Ltd , https://www.yongyuetube.com
It is one of the low-value consumables with high usage rate. It is generally installed on a dry foam rack with the package or in bulk. When used, it is taken out by the operator and placed on the plastic centrifuge tube rack in the ultra-clean workbench. The common centrifuge tube rack can only make the centrifuge tube stand upright. When transferring liquid or needing centrifugation, the operator should hold the centrifuge tube in the left and the night gun or aspirator in the right. If it is necessary to transfer a large amount of liquid reagents or perform gradient centrifugation operations, such as density gradient centrifugation to separate mononuclear cells, the operator needs to hold the centrifuge tube with the right hand for a long time and tilt the centrifuge tube, which often causes the operator's wrist joint pain. At the same time, it will also affect the liquid superposition effect, which will easily lead to the mixing of liquids of different densities, resulting in the failure of the experiment.