Sexual reproduction means seed reproduction. Kudingcha is a dioecious plant with sporadic distribution and low seed setting rate. In addition, the seeds of Kudingcha are thick and hard. It is difficult to germinate under normal conditions.
1. Seeds Harvested Kudingcha seeds generally mature in November. The fruit is vermilion, which is a sign of maturity. Seed harvesting should be timely, harvesting is premature, embryos are incompletely developed, and growth is weak; when harvest is lost, the fruits are harvested. Drop, cause loss. In order to ensure the seed quality, it is best to divide the seeds into secondary harvests. When the first harvest, the immature leaves are left, and the second harvest is taken half an month later.
Second, the seed storage just picked fresh fruit, moisture content of up to 50 ~ 60%, not easy to store, so the fresh fruit before storage to go to the husk, and then dried indoors, the thickness does not exceed 5cm, turn over several times a day, so that 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. Sand paving 3 ~ 4cm, after laying on 1cm seeds, then covered with wet sand 1cm, 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.
Third, 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. Seed soaking with water for 3 to 4 days, you can change the water every day. Germination technology is a key technology factor for successful sexual reproduction. Priming with incubator, temperature 42 ~ 44 °C, humidity 65 ~ 75%, germination time of about 30 days.
Fourth, sowing and seedling management sowing nursery base must be organized. 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 Seed sowing after 5 to 6 months after seeding, 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 the soil is soft in the young hours or after the rain, so as not to affect the seedlings; Seedlings are generally unearthed from May to June and coincide with high temperatures. Timely topdressing can provide nutrients in a timely manner and have a drought-resistant effect. Top dressing is better with thin human waste; third is 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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