2. The period of spraying micro-element fertilizer during the period must be determined according to the variety of vegetables and different trace element fertilizers, generally sprayed before flowering.
3, the amount of fertilization of 40-75 kg of fertilizer, it is appropriate to wet the stems and leaves of vegetables.
4, the number of times off the leaf surface spraying generally less fertilizer, so it is difficult to meet the needs of all growth and development processes. According to the length of the vegetable growth period, it is generally appropriate to spray 2-4 times.
5, time should be selected to spray on cloudy or sunny afternoon to evening, can extend the residence time of fertilizer solution on vegetable leaves, which is conducive to improve the spraying effect.
6, mixed spray and trace element fertilizer mixed spray, or mixed with other fertilizers and pesticides, can save the process, play a "one spray multi-effect" role. However, all kinds of trace element fertilizers should not be mixed with alkaline fertilizers such as grass ash and lime. Zinc fertilizer should not be mixed with superphosphate. Copper fertilizer should not be mixed with potassium dihydrogen phosphate solution.
Source: Ningbo Academy of Agricultural Sciences
According to the adherence requirements of the product, cells are divided into three categories:
Suitable for suspension culture of common cells and tissues;
The standard type has good cell adhesion performance and is suitable for cell adhesion growth;
Dedicated containing cell pastes (cell clusters that can be used in some special cases, such as cell walls, cell surfaces and secretory cells).
According to the shape of the instrument, it is divided into:
Wide body culture flask;
triangle bottle;
Torticollis flask.
cell culture flask,filter cap cell culture flask,suspension culture flasks,cell tissue culture flask
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