(1) The coconut forest prefers high temperature and rainy characteristics. Therefore, when formulating plans for the development of coconut production and choosing suitable afforestation sites, we must fully consider the relevant ecological conditions. That is, the average annual temperature must be above 23°C, and the annual average daily temperature of 13-15°C should not be too long. The annual rainfall should reach 1600 mm or more and be distributed evenly. If the groundwater level is high, less annual rainfall can be accommodated. Poor land, drought, and poor natural conditions are not suitable for commercial production of coconuts. In general, Hainan farmers use coconut trees grown on the edge of forests, roadsides, riversides, tianbian, and gorges where local conditions are better. There is also a certain amount of output for many years. For large-scale cultivation, one must choose a good place; two require technical support for cultivation in order to achieve the desired results. (2) Seedlings, fruit collection and selection: 1 High-yielding populations have a long history of coconut cultivation. In the long-term production practice, it is considered that the selection of fruit from high-yielding single plants will not increase the yield; the fruit selected by the high-yielding population The offspring can significantly increase production. Many foreign coconut producing countries have selected many high-yielding populations as seed collection gardens. From Hainan Wenchang Yandun to Qionghai long slope, there are many small round fruit (striped albino) high-yielding populations that have not been fully utilized. The two kinds of fruit collection are closely related to the germination rate of coconut fruit, the robustness of the coconut seedlings, the rate of gardening, and the harvesting of the fruit. It takes 12 months from the pollination of the flower to the full ripening of the fruit. When the fruit color changes from green to yellow-brown, the pericarp is full without wrinkling, and the water is shaken with a crisp sound, so that it can be used as a fruit to grow strong seedlings. If it is not mature, the coconut fruit will be perishable, germinate, weak, and dead. After the fruit is harvested, it is usually placed in a well-ventilated place—for a period of time, let it dry naturally, matured, and not exposed to sunlight. Then sowing buds to reduce the rot of the fruit. The time of placement depends on the characteristics of the coconut variety. Generally high-yield coconuts are placed for 20-30 days and dwarf and hybrid coconuts are placed for 1-2 weeks. The three kinds of fruit selections are also effective methods for selecting fruits in commercial piles without having high-yield population selection conditions. The specific method is based on the long-term production experience of Wenchang coconut farmers put forward the "dense, heavy, cooked" three indicators to choose. "Dense" is a result of many, high density, high yield. The main sign is that there are 2-3 indentations on the shoulder of the fruit. "Heavy" is because the fruit is large and heavy, coconut is thick, and the content of dried coconut is large, and the proportion is also large. "Matured" is the fruit is fully mature, shaking sound of water, smooth skin, no wrinkles. According to the Coconut Research Team of the South China Tropical Crops College's Hot Work Department, in 1975, a large number of fruit germination and seedling tests were conducted in the fruit piles at the Coconut Harvest station in the eastern suburbs of Wenchang County. The results showed that the germination rate of the selected fruits was 73%. The germination rate of unselected fruits only reached 54%. 4 Spike-making Under certain conditions in Hainan, the panicle-making has a certain effect on the germination rate and seedling growth rate of the fruit. Due to the formation of ear in different periods on the & tree, it experienced different seasonal climates. Some spikes were formed in the first half of the year. Low temperatures and cold waves were in the late stage of fruit ripening, with little impact. Some spikes were pollinated from September to October. The early fruits encountered low temperatures and cold waves. Therefore, fruit development was greatly affected. . As a kind of fruit, the ear should be selected as a general part. The fruit collection period is generally 7-9 copies. (3) Fruit germination There are many methods for germination of coconut seedlings, but they are generally divided into artificial sowing and natural germination. 1 Seed germination is a commonly used germination method. The site for soil preparation called for the removal of weeds, loosening of soil, leveling of land, and establishment of a germination bed in accordance with specifications of a length of 10 meters and a width of 1.2 meters. A human path of 60 centimeters shall be reserved between the beds. Each bed shall have 4 furrows, and the depth and width of the furrow shall be different. 15-20 centimeters, so that 220 seeds are sown per bed and 112500-120000 seeds are sown per hectare. China Agricultural Network Editor
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