A hazardous feature: The larvae are likely to feed on the leaf leaves, leaving only the upper and lower epidermis, showing a massive tunnel. Generally, there are 1-2 head lice and insect feces in the tip of the leaf, causing spinach to lose its commercial value and food value. Second, control methods: 1. Apply sufficient manure. Avoid using raw manure, especially manure, so as not to bring the source of insects into the field. 2, pharmaceutical control. Due to the short growth period of spinach, pesticide residues must be taken into consideration. Short-lived pesticides that are easy to photolyze and hydrolyze should be selected. In addition, because the larvae are damaging to the leaves, the medication must seize the key moments from spawning to early hatching. . It can be used to eliminate fleas (21% synergistic cyanide horse oil) 8000 times, 2.5% deltamethrin or 20% fenvalerate 3000 times, 10% bromine, horse cream 2000 times, 10% chrysanthemum. Horse cream 1500 times, 25% quinoline EC 1000 times, 80% Trichlorfon soluble powder or 90% Trichlorfon crystal 1000 times. 50% phoxim EC 1000 times.
Preservation tubes are swabs with disposable virus sampling tubes to collect DNA tests for disposable nasal flocking sterile medical transport.
Made of high-quality PP material, high chemical stability, high temperature sterilization, suitable for multi-channel pipettes and automatic machines. Square well, U-shaped bottom design ensures minimal sample residue. Molded letters and numbers for easy positioning. Complies with SBS regulations and can be stacked stably. Good sealing performance, the top of the plate is flat and uniform, maintaining an effective seal. Optional gamma radiation sterile, DNase and RNA enzyme free, pyrogen-free.
Stable performance, low price, the material has a strong electrostatic adsorption capacity, can provide customized plastic card color according to user requirements, good color consistency
Non-invasive, painless and easy to operate. Samples are non-contagious and can be transported safely.
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