Notes on the latest use of bumblebee pollination in winter

Because of the low temperature in winter and the closure of the greenhouse, in order to improve crops, many growers often choose bumblebees for pollination, but in the process of bumblebee pollination, because of environmental and climate change problems, in order not to affect the normal use of bumblebees, we need to pay attention to a few points, let's take a look.

1. Pay attention to the harm of fumigant to bumblebee

In winter, because the ventilation time is cut off, the humidity in the shed is higher, so there are more pests such as whitefly, aphids and thrips, but in the case of low temperature and low light, very farmers will choose fumigant to control insect pests in order not to increase humidity. Fumigant insecticide has the advantages of effective, fast, no dead corner, cheap, labor-saving and so on, but bumblebee is also a kind of insect, which is more or less affected by fumigant, so friends who choose bumblebee pollination in greenhouse in winter should pay attention to it. It is best not to use fumigant during bumblebee pollination.

2. Pay attention to the effect of bilayer membrane on bumblebee.

After entering winter, many growers will choose double-layer film as a measure of heating and heat preservation, because the light is weak and short in winter, so they choose double-layer film. When sunlight enters the shed, the visible light of bumblebees will weaken after being filtered by double-layer films. If there is a cloudy day, the visible light of the filtered bumblebees will be even less. This will lead to bumblebees not only work, or even not work out of the nest, so in order to avoid this situation, in accordance with the greenhouse film, to choose a good light transmittance greenhouse film, can install the intima into a pull type, pull the intima open during the day to increase the light.

3. Be careful in choosing pesticides

During the period of bumblebee pollination, the choice of spraying pesticides is also critical, it is best to choose low toxic or biological pesticides to avoid drug residues, if the use of pesticides with high toxicity, high residues and high internal absorption can easily lead to bumblebee death. When spraying pesticides, we should pay attention to the weather changes. Pesticides decompose faster in light and high temperature than in cloudy days, so we should pay attention to the weather for a few days after spraying pesticides. If there are more cloudy days, the spraying time should be appropriately extended.

4. Pay attention to the placement and heat preservation of the beehive

The winter greenhouse beehive is generally hung on the back wall of the greenhouse, 1.2m from the ground, and a sunshade is built on the beehive to avoid direct sunlight. Northern winter night temperature is low, humidity is high, at the same time to do a good job of heat preservation and moisture protection, you can cover the beehive with a breathable thin quilt.

The above is the introduction of matters needing attention in using bumblebee pollination in winter. I hope it can help you. If you want to know more about it, please follow us.