The twigs, which used to be bred in real life, are still largely bred in real life, with a small number being bred in marriage. It is still widely used because it is easy to grasp the means to produce a proper nursery in one year and to produce two to three years after planting. After all, however, there are variations in the seedlings, especially when artificially pollinated between different varieties. Therefore, it is important to actively promote child-rearing。
(i) live reproduction
In addition to being used directly for planting, live seedlings are grown as seedlings。
Crop
Feeding and seed treatment seeds should come from fruits that are large and positive on good varieties, productive, high-quality mother stands. In the case of live seedlings, they must come from artificially pollinated fruit from the same breed. Seeds are collected only when the fruits are fully mature。
Seeds are removed and washed away from the raw grains, dry and broadcast immediately, or are fully dried and kept for the following spring。
Period and method of sowing
In areas with high winter temperatures, it is best to collect seeds after harvest in the autumn, dry and soak, with high rates of fresh seed sprouts and long-lived trees, and to foster strong seedlings. But the twigs are particularly sensitive to the frost, and in most parts of the country it is necessary to make winter winter efforts. In guangzhou and to the south, seeds are generally planted around autumn breaks (late september). Spring broadcasts are well served by low-temperature local rain weather, which generally occurs between late march and april. Seeds of platinum are insufferable and, if they are stored at constant temperatures for a year, they are hardly germinate. The nursery shall be for the sun, the cold air shall not accumulate, the well drained and fertile sandy land shall be chosen. Decorated organic fat and lime are used as base fats, which rises in regular ditches and flattens the surface. It's either on the strip or on the air. 6-7. 5 kg of seeds per acre (approximately 4,000 seeds per kg). Covered with river sand or fine earth, then covered with a little pressure, full water shower, and be careful to keep wet。
And when it has sprouts, the grass is torn apart so that it does not bend over the seedlings, so that they may be properly followed up to promote their growth. During the winter, plastic membranes were used to build the shed to prevent frost and protect the trees。
(ii) nutritional reproduction
Cultivation is still not widespread, but it should be the main routine method of breeding in the future, as it preserves the quality of the mother plant, ensures consistency in planting materials and facilitates the rapid spread of good seeds。
The logs use their own beryllium (i. E., seedlings from the same species or different varieties of beryllium branches) and are strong in life and in marriage. In the case of beryllium wood of other kinds, it shall be tested. A sprout or a branch is used for marriage, either in spring or in autumn。
Pyramids have low survival rates and are not currently used in production。
In terms of organizational development, it is still in the research phase and has acquired a breeding plant and roots。
