1, supplementary feeding: artificial feeding when honey sources are scarce. The methods are as follows: ① Supplement honey. Honey can be diluted by 20% with warm water (crystallized honey needs to be dissolved with a little water). Diluted honey can be fed to bees through spleen perfusion or inverted frame feeder. ② Supplementing syrup. Syrup is made by adding 50% water to white sugar, heating to dissolve it fully, and then cooling to a slight temperature. It is best to add 0. 1% citric acid to syrup to facilitate digestion and absorption. Brown sugar is not suitable at this time.

2. Reward feeding: artificial feeding during the breeding period and the production period of bees. Generally, a small amount of 60% honey solution or 50% syrup is given every other day 1 time in early spring, and then the dosage will increase to 1 time every day, starting from 40 days before the honey flow period until a large amount of honey powder is collected from the outside. Each bee can be rewarded with 50 ~100g syrup.

3. Pollen feeding: The purpose is to supplement the feed in protein. In late winter and early spring, the pollen preserved in the previous autumn can also be replaced by soybean powder. The feeding method is as follows:

(1) liquid feed. Add 10 times of syrup to the pollen, boil it, cool it and feed it in a feeder.

(2) cake feeding. Add the same amount of honey or syrup to the pollen or substitute pollen, stir evenly to make cakes, wrap them in plastic paper, and put them on a beam for bees to eat. This method is often used in cold current. ?

4. Add salt to water supply: ① water. Generally, each bee colony needs to collect 200 ~ 300ml of water every day. Fill the feeder with water or put a wet towel on the gauze cover to collect water by yourself. 2 salt. Add 1% salt to the syrup.