Before and after flowering are collectively referred to as flowering period, so the matters needing attention in applying micro-fertilizer in grape flowering period are as follows:

1, suitable spraying period: the spraying period of medium and micro-fertilizer must be determined according to different crop varieties and different micro-fertilizer varieties.

2. Fertilizer spraying dosage: medium and micro fertilizers are used alone, diluted by 500-800 times with water, or mixed with water-soluble fertilizers of large and medium elements or simple elements of nitrogen, phosphorus and potassium according to the ratio of 1: 10, and can be sprayed, washed or drip-irrigated.

3. Fertilizer spraying times: Generally, the amount of fertilizer used when spraying micro-fertilizer on leaves is small, so it is difficult to meet the needs of all growth and development processes at one time. Therefore, it is generally appropriate to spray 2 ~ 4 times according to the length of flowering period in the growing period of grapes.

4. Fertilization time: In order to reduce the loss of trace fertilizer during spraying and facilitate the absorption of leaves, it is advisable to spray it from cloudy or sunny afternoon to evening, which can prolong the retention time of fertilizer solution on grape leaves and improve the spraying effect.

5, when mixing pesticides, we should consider the dual role of fertilizer efficiency and drug effect. Generally speaking, all kinds of trace fertilizers should not be mixed with alkaline pesticides.

6. The micro-fertilizer in the sea silkworm nest is a kind of trace element water-soluble fertilizer, which can be used for foliar spraying, washing and drip irrigation of grapes.