1. Biological characteristics Pitaya is tropical and subtropical fruit, drought-tolerant, high-temperature resistant and hi-light. It does not require strict soil quality, and can be planted on flat ground, hillside, and sand-stone land. The optimum soil pH value is 6-7.5. It is best to choose lands with rich organic matter and good drainage. Pitaya does not tolerate frost, and winter temperatures are below 0°C in simple greenhouses. Second, planting methods Pitaya cultivation methods are various, you can climb the wall to plant, you can also planting scaffolding, but the column is the most common cultivation, its advantages are low production costs, high land utilization. The so-called column cultivation, is the establishment of a cement column or wood column, planted around the column 3-4 dragon fruit seedlings, so that dragon fruit plants grow along the way up the cultivation. Third, planting specifications Double-season column spacing is 1.5m2m, according to each column around the planted four seedlings calculated, every 667m2 can be planted 750. Dragon fruit can be planted all year round. Care must be taken not to plant deep. It should be implanted to a depth of about 3cm. The soil should be kept moist at the beginning. Four, field management of dragon fruit 12-14 months after the beginning of flowering results, annual flowering can be 12-15 times, from April to November is the fruit-producing period, 30-40 days after the fruit has matured, fruit weight 500-1000g, In the second year after planting, more than 20 fruits per column were produced, and in the third year of fruiting, the management level was higher, with a yield of 2500 kg/667 m2. Its high yield cultivation points are as follows: Thin fat manure: Due to the long fruit harvest period, organic fertilizer should be re-applied every year. Nitrogen, phosphorus and potassium fertilizers should be applied in a balanced manner for a long time. Potassium and magnesium fertilizers are added during flowering to promote the accumulation of sugar in fruits and improve quality. During the result period, the soil was kept moist and the tree tray was covered with grass or mushroom residue. When the weather is dry, water is poured 3-4 days. 2. Topping: When the branches grow to a length of 1.3-1.4m, they pick their hearts, promote branching, and allow the branches to droop naturally. 3. Interspecific and artificial pollination: When planting dragon fruit, it is necessary to plant about 10% white meat type dragon fruit. Pollination between varieties can significantly increase the seed setting rate. In case of rainy weather, artificial pollination should be conducted. Pollination can be applied directly to the female stigma head with a pen before the flowers bloom in the evening or early morning flowers are not closed. 4. Pruning branches: After harvesting the fruit each year, the branches with fruiting branches are cut off and the new branches are re-issued so as to guarantee the output in the coming year. 5. Pest control: Pitaya pests less, seedling stage susceptible to snails and ants harm, can be controlled by insecticides; susceptible to diseases in the high temperature and humidity season, there are some branches of necrosis and mildew, available powder Triadin, strong copper oxide and other prevention The effect is good.
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