In winter, the vegetable greenhouses are closed. If pesticides are used improperly, they will not reach the prevention and control effects, and they are also prone to phytotoxicity. The use of pesticides in winter greenhouse vegetables should pay attention to the following points: First, it is not appropriate to use live water to formulate pesticides Because there are many impurities in the living water, it is easy to plug the sprayer's sprayer with its dispensing, and at the same time, it will also disrupt the liquid suspension and cause precipitation. Second, should not arbitrarily increase the amount of water Excessive water addition reduces the concentration of pesticides. Spraying on the crop leaves only a very small amount of pesticides, which is not enough to kill the pests, and some pesticides even completely fail. Excessive water addition can also result in the loss of pesticides and environmental pollution. Therefore, when formulating pesticides, it is necessary to strictly control the amount of added water in accordance with the scope of use of pesticides. Third, should not arbitrarily increase the amount of pesticides Before the pesticides are allowed to be produced and sold, they must undergo a strict field efficacy test, and then determine the actual usage data such as the amount of drug used, the time of application, and the number of applications. Therefore, it is necessary to apply the medicine according to the dosage specified in the instruction manual to achieve the control effect. Increasing the amount of medication will not only increase the input, but also cause crop damage, increase pesticide residues in agricultural products, and increase environmental pollution. Fourth, it is not appropriate to spray pesticides during flowering In the flowering period of crops, their tissues are young and have a weak stress resistance and are prone to phytotoxicity, so they must avoid flowering during spraying. Fifth, it is not appropriate to spray pesticide before harvesting The period of high-efficient and highly toxic pesticide residues is approximately 60 days, and the period of high-efficiency and low-toxicity pesticide residues is approximately 15 days. Therefore, the use of pesticides should be forbidden before vegetable harvesting to avoid food poisoning.
Bee Pollen comes from
nature, is the bee from the flowers (nectar plants and pollen plants)
flowers collected in the pollen grains, and joined the special glandular
secretions (nectar and saliva) mixed into an irregular Flat round shape. Bee
pollen has a unique natural health care and medical and cosmetic value,
is more and more people know, is a high-protein low-fat nutritional
health food, known as "all-round nutrition food" "concentrated natural
medicine library" "Oral cosmetics" and so on, is the treasure of human natural food.
We provide rape pollen, tea pollen, sunflower pollen and mixed pollen, they are all collected from our professional green beefarm base.
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