Male pollen collection High-quality male pollen grains are plump, yellowish and translucent, and their hands are puddled. In general, pollen is collected when the male inflorescence changes from green to yellow, and the pollen can be shaken and collected on a white paper for later use. The flowering sequence of the mature flower of Ginkgo biloba is identified from the bottom to the top. The main branch first blooms, and then the lower branch blossoms. When one-third of the styles on the lower branches had water on their heads, the whole tree flower was mature and artificial pollination was the best. To grasp the best timing of artificial pollination, you can also refer to the following characteristics: 1. Ginkgo biloba leaves have 1 to 2 cents coin size. 2. There are scattered scales on the ground. 3. After the dew had just dried or around 3 pm, touch the stigma of the ginkgo flower head with a finger, obviously a very fine silk thread. With male flowers of appropriate quality, flowers can impart 15 to 35 kilograms of mature fruit per 50 grams of pollen. In general, pollen on the tree is less pollinated and less on the tree. Pollinating is done so that the tree is full of half-tree, half-tree and one tree. Correct pollination of ginkgo pollen does not require drying after pollination. The male flower was soaked in water for a while, and then gauze was used to filter the slag. Each 50 g of pollen water was mixed with 4 to 6 kg of powdered liquid to spray pollinate. When the spray is applied, the wind will rise from top to bottom, first outside and then inside, and all the branches will be sprayed. No spray or heavy spray will occur. After pollination, in the event of heavy rain, pollen needs to be replenished the next day, but the amount of pollen is small. After the pollen solution is properly prepared, if it cannot be pollinated immediately under special circumstances, it will not fail after being stored for one or two days and it can still be used. Do not mix any impurities with the pollen solution. All pollinators must be cleaned before pollination and no foreign objects should be sprayed on the flowers. Low temperature weather (below 20°C) can be pollinated after morning dehydration, and high temperature weather (above 20°C) is suitable for pollination in the afternoon. 7 to 10 days after pollination, the leaf roller moth is controlled to ensure normal fruit development.
Urit Medical,Medical Analyzer,Medical Test Paper,Laboratory Analyzer
Changchun Medicon Technology Development Co., Ltd , https://www.teststrip.pl