Ginkgo biloba different time cultivation technology management


November to late spring in February, pruning: Grafting seedlings were planted in short-dry natural form. Seedlings do not need plastic surgery. Ginkgo pruning is mainly to cut dead branches, branches, branches, over dense branches, drooping branches and overlapping branches. The short branches and old branches were retracted to promote long branching in the short cuts at the cut-out to cultivate new fruiting groups.
Planting: Grafting seedlings spacing 4 meters x 5 meters; seedlings generally 5 meters x 6 meters or 7 meters x 8 meters. Plant 1/15-1/20 males as pollination trees. For long-term intercropping of crops or other economic crops, belts with a row spacing of 8 meters and a spacing of 4-5 meters are used. Plants are planted along the roads, on the sides of the village, beside the channels, and along the banks of rivers. Ginkgo biloba is used to plant garden trees in parks and factories, which can be viewed and increased. Planting a hole 80 cm square, depth 60 cm, each hole applied organic fertilizer (garbage fertilizer, bar fertilizer) 50 kg, plus 0.5 kg superphosphate seeds and cuttings.
Early spring fertilization in March: Large trees (eg 50 kg of seeds) applied 100 kg of rotted bar fertilizer or human waste, 2 kg of urea, and 2 kg of superphosphate per plant. At this time fertilization to promote the formation of female flowers, flowering and seeding and drawing. Seeding is generally used for seed sowing, spacing 20-25 cm, seed spacing 8-10 cm, 60-70 kg per acre seed, emergence of about 15,000 strains. The saplings of the saplings below 10 years of age were cut and soaked in fresh water for 16 hours. The survival rate of cuttings can reach 100%. Using cuttings and seedlings, it can maintain the good traits of the female parent, and can also bring about early results. Ginkgo grafted large anvil graft grafting and seedling grafting two. Seedlings grafted with small seedlings are generally 1-2 years old, and the growth branches with scion length of 1-3 years are cut off. The thickness is similar to that of the rootstocks. The methods are cut joints, splicing joints, slicing abdominal joints, and subcutaneous branches grafting; small rootstocks also Can be used to cut buds (paste buds), cut down buds can also be a short branch of bud graft can be 2-3 years earlier results. Large rootstocks can be grafted on large rootstocks that are over 5 years old or do not result in large trees. Generally use the skin graft or subcutaneous grafting method, the grafting site is 1.5-2 meters at the main rootstock. The scion can be used with 3-4 years short branch and about 20 centimeters long scion. The result can be achieved after 2-3 years, and the canopy is also dwarfed. Standing pillars support upright growth. Ginkgo biloba roots often produce roots that can be planted in the early spring.
In April and mid-flowering pollination: dioecious. Males are generally taller, with smaller branching angles and narrower tree crowns. Male flowers are mostly inflorescences, pollen is very much, timely collection, awarded female flowers full bloom, local uniform pollination, should not pollinate too much, resulting in too many results, resulting in size years. The phenomenon of deforestation of males in some areas has resulted in insufficient pollen sources and the need for artificial pollination.
From May to June, the seed expansion fertilizer was applied and the amount of fertilizer was the same as early spring fertilizer. Plowing winter green manure, sowing summer green manure, Indonesian green beans, black beans, pig kidney beans and so on. When the canopy coverage is below 0.5, it can still be interplanted, such as peanuts, soybeans, broad beans, rape, ginger, day lily and so on.
July to August summer weeding, covering the rhizosphere, or chemical weeding, such as using glyphosate (for perennial weeds 265 g, add water 50 kg, 40-50 kg per mu; or trifluralin 50 g, add water 15 kg (for monocotyledonous weeds), spray 50-60 kg per mu.
From late September to mid-October, this is the proper time for seed collection (harvesting). The main fine varieties are: Home Buddha Finger (Taixing) Dongting Yellow (Taihu Dongtingshan area), Golden Fruit Bergamot (Zhuji, Lin'an, Changxing), Damei Nuclear (Zhuji, Changxing, Lin'an, Fuyang), Yuanguo Bergamot (Zhuji) Wait. The appropriate time for seed collection is when the ginkgo seed coat turns orange and there is a small amount of self-detachment, you can knock it once. If harvesting is too early and seed development is incomplete, not only the yield is low, the quality is poor, and the seed germination rate is low, resulting in no sprouting. Because the seeds are not easy to fall off, if bamboo sticks are used to beat, the short branches and leaves of the seeds are often damaged, affecting the photosynthesis after harvesting and the output of the following year. After the seeds are harvested, they can be spread on mats or on flat grounds inside and outside, covered with straw. The thickness of the booth shall not exceed 40 centimeters. Do not water or cover the soil. Otherwise it will be prone to heat, or the seed coat will not rot evenly. The seed shell color is not white. When the seed coat rots, remove the pods (scouring) to test the seed coat, wash with clean water, dry for 2-3 hours until the core shell is shiny, and do not dry it to prevent deterioration. The ginkgo seed coat is corrosive and it is best to wear rubber gloves when handling. While collecting seeds, collect defoliants and dry them. However, it is not appropriate to pick the leaves in summer. Post-harvest fertilization, applying 100 kg of fertilizer or waste fertilizer per plant. The method of fertilizing is to use a tree chaser as the center to dig out the ring-shaped ditch. When digging, attention should be paid to damage to the main and lateral roots. The depth is 30 cm. The width depends on the amount of fertilizer. The fertilizer is applied to the ditch, and the fertilizer is sprinkled on the organic fertilizer. . After the application of irrigation or water supply better. Seeding green manure in winter: such as yellow peony, purple sorghum, big ridge peas, purple cloud, etc.

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