I. Seed harvesting and storage Good harvested seeds and advanced storage and preservation techniques are the primary conditions for successful sexual reproduction. If not handled properly, it will affect the seed germination rate and seedling growth potential. 1. Seeds harvested Kuding tea seeds generally mature in November, the fruit is vermillion is a mature mark, the seed harvesting should be timely, harvesting is too early, embryos are not fully developed, growth is weak; harvest loss, the fruit Drop, cause loss. In order to ensure the seed quality, it is best to divide the seeds into secondary harvests. When the first harvesting, the immature leaves are left for 10 to 15 days for the second time. 2. Seed storage has just picked fresh fruit and the moisture content is as high as 50 to 60%. It is not easy to store. Therefore, the fresh fruit should be removed to the husk before storage and then dried indoors. The thickness should not exceed 5cm. Water loss is even and fresh fruit should not be exposed in general so as to avoid excessive water loss and excessive water loss, which will affect the germination rate. The dried seeds were stratified by storage. Spread 3 to 4 cm with river sand, then spread 1 cm seed, then cover with wet sand 1 cm, layer by layer, and so on. To store seeds in this way, pay attention to the frequent application of fresh water to the river sand to keep the river sand moist. Second, seed soaking and germination Kuding tea seed coat abnormal hard, without special treatment, it is difficult to germinate. Seed soaking after soaking and germination, is conducive to early emergence and increase the rate of emergence. Soaking with water for 3 to 4 days, change the water every day. Germination technology is a key technology factor for successful sexual reproduction. The group underwent tests to incubate with an incubator at a temperature of 42-44°C, a humidity of 65-75%, and a germination time of about 30 days. Third, sowing and seedling management sowing nursery base should be finishing. Generally, sandy loam is more suitable, soil is not easy to compact, which is conducive to emergence. Miao auxiliary soil layer requires more than 40cm. In addition, adequate water sources must also be considered in the Miao-Xiu election. 1, sowing sowing is generally in November to March the following year, winter sowing earlier than spring sowing. The group's experiment was sown in March 1993. After the seedlings were leveled, the seeds of Kudingcha mixed with phosphate fertilizers were evenly spread and then covered with sifting fine soil. The thickness was three times the thickness of the seeds and the weeds were kept warm on the top. Kudingcha is a small seed, so shallow sowing is required to facilitate seedling emergence. On the other hand, shallow sowing can make the seeds get enough oxygen, and in the spring of the following year, the surface temperature of the soil will rise faster and the germ can be unearthed earlier. 2. Seedling management seedlings will be unearthed from May to June after the seeds are sowed, and the emergence rate is not high. According to statistics, only 2400 of the 14 kudingcha seeds have been unearthed, and only 2,000 survived in August this year. After the emergence of the seed, the main must pay attention to the following aspects of management: First, timely weeding. Miao auxiliary weeds not only compete with seedlings for water and nutrients, but also cause pests and diseases. Weeding requires the removal of the weeds when they are young or after the rain, so as not to affect the seedlings. The second is multiple fertilizers. Seedlings unearthed generally in May to June, coincided with the high temperature season. Timely topdressing can provide nutrients in a timely manner and have a drought-resistant effect. Top dressing is better with thin manure. The third is to take a shady shed. Freshly emerged seedlings are weak in drought resistance and sprouts are easily burned. A shady shed in June can effectively prevent the excessive evaporation of the nursery water, ensure the water supply of the seedlings, and prevent the sprouts from burning. Seedling management also includes pest control, shaping pruning, cultivator and so on.
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