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questions :Lycopodium life cycle
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[Visitor (112.0.*.*)]answers [Chinese ]Time :2022-05-15
Most of the seeds are kidney-shaped and flattened, brownish-yellow. Flowering period is from June to September. The fruiting period is from July to October.
In May, June and July, the planting and weeding were once planted, and the sheep manure, manure and cake fertilizer were applied as the base fertilizer from late October to early November, and the topdressing could be applied with urea in May and phosphorus and potassium in June to July. The young trees are shaped, and in the autumn after the planting of goji berries, 3-5 thick branches are selected as the main branches around the upper part of the main trunk, and they are shortened at about 20 cm in the spring of the second year, and short-cut at 20-25 cm as backbone branches when new branches are issued on this branch in the spring of the second year. In the 3rd and 4th years, the method of the second year continued to use the long branches on the backbone branches to expand and increase the canopy skeleton. After 5-6 years of plastic cultivation, it enters the adult tree stage. Adult trees are pruned, pruning dead branches, cross branches and roots of tillers every spring, and in summer, they are densely left thin, and long branches, diseased branches and needle-pricked branches are cut off.In autumn, full pruning, tidying up the canopy, selecting good fruiting branches...
Pruning principle: to leave the old and the new, to the disease to stay healthy, to leave the weak and strong, so that the fruiting branches are evenly distributed in the canopy. It is required to cultivate more fruiting branches and cut off non-productive branches.
[Visitor (112.0.*.*)]answers [Chinese ]Time :2022-05-15
Stone pine life cycle

Spore reproduction
Pinus spp. has no flowers or seeds. At the tip of the branch there are many sporangia, and the spores inside will spread with the wind and reproduce offspring. When the spores begin to eject, they are cut off along with the leaves and placed in a paper bag. In order not to damage the leaves, it is also possible to wrap the blades in a clean new paper bag or plastic bag and flick the spores into the bag. Sow as soon as possible after collection because the fresher the spores, the higher the germination rate and the faster the germination. To stimulate spore germination, it can be treated with 300 mg/L GA3 solution for 15 min before sowing. The nursery soil is mostly prepared by mixing saprophyll soil, peat soil and river sand, and the commonly used formula is humus soil, loam soil and river sand in the ratio of 6:2:2. The above raw materials must be sieved and mixed well, and steam sterilization can only be used.In addition, seedling containers for sowing must also be disinfected. After sowing, the temperature should be controlled at 25 ° C, the air humidity is more than 80%, and the sunshine is more than 4 hours a day, and it takes 2 to 3 months from sowing to leafing. When the sporophytes grow 3 to 4 leaves, they are transplanted into pots, still using mixed soil as a substrate, and the seedling height is 10 to 15 cm. Spore propagation technology requirements are strict, requiring high temperature and high humidity environment, all supplies including containers, planting materials and indoor spaces should be strictly disinfected and kept clean and hygienic. Keep the room humid during the dry summer season...
Some species of stone pine can also be propagated by cuttings.

tissue culture

For species that produce a small amount of spores or do not produce spores and have difficulty reproducing with spores, or for the rapid expansion and reproduction of precious species, tissue culture can be used to carry out in vivo rapid propagation. Large-scale modern commodity production also requires tissue culture propagation. Ferns are in different growth stages and have different requirements for light. Generally, the early stage of growth is the budding period, and it is necessary to prevent excessive light and shade. During sleep, it should be placed in a well-lit place. Most ferns prefer filtered, indirect, or reflective scattered light. If the light is insufficient, the plant will grow and appear weak or wilted.

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