The greenhouse watermelon bee pollination technical regulations

In order to standardize the pollination technology of watermelon bees in greenhouses, the Economic Crops Research Institute of Hebei Academy of Agriculture and Forestry Sciences drafted this procedure. This standard specifies the bee colony preparation, facilities and environmental requirements, bee colony allocation, bee colony management, field management, and precautions for pollination of watermelon bees in greenhouses. This standard applies to greenhouses, watermelon production in the greenhouse.

One, bees

It mainly refers to Italian bees and Chinese honeybees that are pollinated for watermelons and other melon crops.

Second, pollination beehive

Designed specifically for pollinating swarms, it consists of boxes, bees and spears, and feeders for cartons or boxes that store and keep bees.

Third, bee colony preparation

1. Colony selection. Select a temperate, strong collecting power, strong queen bee and strong disease-free group.

2. Transportation. Bee swarms should be delivered one day before entering the shed. Pay attention to the following items when transporting them: Transport tools should be clean, free of pesticides, etc.; transport, ventilation, insulation, and cold should be maintained; long-distance transport should be properly fed with bee food (sugar or honey): Water is 1:1); fix the nests and beehives to prevent the bees from squeezing during transportation; transporting the bee should be done in the evening or at night, arrive on the same day or the next morning, and promptly remove the bees upon arrival.

Fourth, facilities and environmental requirements

1. Facilities requirements. The ventilation holes in the booth cover the 30-mesh insect net and the door is closed tightly.

2. Environmental requirements. The suitable temperature for bee pollination is 18°C-30°C, the daytime temperature should not exceed 35°C, and the night temperature should not be lower than 10°C. Suitable relative humidity is 40% ~ 70%, higher than 80% should be ventilated and wet.

Fifth, bee colony configuration

1. Shelter time. When 50% of the first female flowers of the watermelon plant were opened, the beehive was placed in the booth in the evening and the bees were opened after the bees were quiet (about 30 minutes).

2. Bee colony standards. Usually a pollination beehive is placed every 3 to 5 acres of sheds. Each pollination beehive consists of 4 to 5 spleen bees (1 spleen, 1 to 2 spleen, 1 larval spleen, and 1 empty spleen). The number ranges from 08,000 to 10,000 and 1 egg-laying queen bee. The number of pollination bees in the 1 acre shed is not less than 5,000.

3. Bees are placed. After the bees enter the shed, the beehives are placed on the watermelon ridge rack in the center of the shed. The height of the pedestal is 20 to 30 centimeters, and it is placed horizontally to avoid vibration. Pay attention to sun protection, heat insulation, moisture, and ants. 30-50 cm above the beehive is covered with a shade net.

Sixth, bee colony management

1. Induction feeding. A small amount of petals was removed, and water was poured into the petals. White bees (1:1) were fed to the bees to induce bee colonization.

2. Feed water. Place a shallow dish at the entrance of the nest and add 0.1% 500 ml of light salt water for each 2 days. Put some grass stalks or twigs inside the dish for the bees to cling to.

3. Move the box. After the pollination is completed, the bees return to their nests to close the nest door and remove the beehive from the pollination shed.

Seven, field management

1. Safe medication. The use of pesticides that are harmful to bees is prohibited during the week before and during the pollination of honeybees. If you experience continuous cloudy weather, no powder, and no normal pollination, plant growth regulators can be used to assist fruit setting. 2. Management before pollination. Keep the greenhouses well ventilated, remove all pesticide-related items, and remove harmful gases or odors from the shed. Check that the facilities are tight and prevent the loss of bees. Watermelon cultivation uses conventional water and fertilizer management, and pollinated watermelons are not emasculated.

3. Management during pollination. Note that the temperature in the control room must not exceed 35°C. Check the bee's visit to the flower mark. If it is found that more than half of the field flowers turn black, close the bee mouth every other day to prevent the bees from visiting the flowers.

4. Management after pollination. After the fruit is seated, it is used for sparse melons and melons.

VIII. Precautions

1. Prevent bee bites. Operators should not apply perfumes, hairsprays, powders, sunscreens, lipsticks, and other pungent substances. If you have sweat, sweetness, green onion, etc., you should stay away from the bees.

2. How to deal with bees after biting. Do not be nervous and keep calm. The bees are not poisonous. After being stung by the bees, the bees must be removed and treated. If you have an allergic reaction, you can take antihypersensitivity drugs such as diphenhydramine and prazin. If you have headaches, dizziness, nausea, vomiting, irritability, fever, etc., you should go to the hospital immediately.

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