What should be paid attention to when artificial pollination of Gastrodia elata
① must pay attention to the time of pollen maturation. Artificial pollination can only be carried out when pollen is mature, and artificial pollination can never be carried out without mature pollen.
② can use a large needle to pick out the pollen, but do not pierce the ovary at the bottom of the flower.
③ must use cross-pollination, especially different varieties of flowers, so that the seeds have strong vitality, high reproduction coefficient, strong disease resistance and cold resistance of offspring.
When ④ has mucus on the pistil stigma, artificial pollination is the most suitable. The amount of pollen put on the stigma should be as large as possible and bonded with mucus, so that the pollination effect is good.
Artificial pollination of ⑤ is best carried out on sunny days when there is no wind.
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Pinellia ternata juice can control citrus pests
Cut up 1 kg of fresh Pinellia ternata, grind it with 3 kg of water, spray oranges after adding 30-40 kg of water per 1 kg of powder, or cut 1 kg of Pinellia ternata, add 5 kg of water and boil for 2 hours, then dilute the original solution 20-30 times after filtration. The control effect on citrus scales, red spiders and aphids is more than 98%.
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Cultivation techniques of Ganoderma lucidum in greenhouse
Technical introduction: Ganoderma lucidum grows on broad-leaved stumps or coniferous decaying trees and forms fruiting bodies in summer and autumn. Ganoderma lucidum is not only saprophytic bacteria, but also facultative parasitic bacteria. The suitable temperature for mycelium growth of Ganoderma lucidum was 25 ℃. The optimum temperature for primordium differentiation and fruiting body development was 25-28 ℃. During the growth period of Ganoderma lucidum mycelium and the development of fruiting body, the suitable water content of culture material is 55-60%, and the air relative humidity should reach 90-95%. Ganoderma lucidum is a kind of aerobic fungus, when the concentration of carbon dioxide in the air exceeds 0.1%. The fruiting body of Ganoderma lucidum will form deformity.
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