Fertilization of maize should be vigorously promote the application of seed fertilizer (miao fertilizer), to overcome the "one bombardment" of nitrogen fertilizer in the big bell mouth period, and to ignore improper fertilization methods of phosphorus and potassium fertilizer and trace fertilizer to promote the formation of strong seedlings of corn. When seed fertilizer is added at the time of sowing, attention should be paid to the use of N, P, K, Zn, and Mn, etc., and seed and fertilizer should be applied in separate branches so as to avoid burning or burning seedlings. Mushi DAP 3-5 kg, zinc sulfate 0.5-1 kg, potassium chloride 3-5 kg, can also be applied slow-release fertilizer or compound fertilizer. If you do not apply fertilizer, you must top up the seedlings.
Swabs are ideal for collecting large numbers of samples and quickly eluting samples. It immediately releases specimens into transport media and is widely used in molecular genetics, forensic science, clinical laboratories, and more.
Medical disposable sample collection sample flocking swab,A tube flocking swab for the collection of nasal cell samples,Single use
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