How to plant grapefruit trees reasonably

Few people know that there is a very famous grapefruit producing area in Xindu District of Chengdu. The grapefruit produced in this area won many national quality medals more than 10 years ago. In 2004, the famous economist Robert A. Mondale, the Nobel laureate in economics who is known as the "father of the euro", led an EU economic delegation to visit the pomelo producing area in Xindu district of Chengdu. In 2005, the pomelo variety was certified as green food. It is the Xindu pomelo in Xindu district of Chengdu-Xindu pomelo is a variety in Xindu district of Chengdu. There are two sub-varieties-pomelo No. 1 and pomelo No. 2, which are cultivated in Banzhuyuan Town, Xindu District, Chengdu, among which pomelo No. 2 is the most popular among consumers. Every year Xindu pomelo is sold out before it can be put on the market, which is one of the reasons why it is seldom sold in the market. How to plant properly? First, the requirements and selection of orchard land require that the soil structure and physical properties are good, the soil layer is deep and fertile, drainage, air permeability and water retention are good, the groundwater level is low, there will be no waterlogging in the rainy season, and the content of humus in the cultivated layer of the land should be high, which is required to reach 3-5%. Second, the requirements and selection of fruit seedlings should choose the branches of excellent mother trees as scion grafting seedlings, and strong seedlings with soil free of diseases and insect pests. Third, planting specification 1 pomelo generally planting 50 plants per mu, plant row spacing 3.3 m × 4 m, pomelo 2 planting 60 plants per mu, plant spacing 3.3 m × 3.3 m. Fourth, the planting time is suitable for spring and autumn, especially in autumn. It is planted from the Beginning of Spring to Rain Water in spring and from mid-September to the end of October in autumn. Fifth, digging nests requires digging large nests in order to achieve the effect of soil improvement. The big nest is 1 meter wide and 1 meter deep. After the nest is dug, fill in the mature soil, green manure, compost, etc., one layer of fertilizer and one layer of soil, and the base pile is high above the ground. 6. the upper soil in the nest will be excavated and loosened by planting, and 15 kg of rotten compost, 1.2 kg of phosphate fertilizer and 0.6 kg of potash fertilizer will be fully mixed and pressed, and then covered with a layer of fine soil. Dig a small nest in the planting nest, which should be the same size as the soil mass with soil seedlings, and then put the seedlings on top to make them stand upright, spread the roots, and clog the fine soil. Those who have the conditions can cover the tree plate with green manure or straw to maintain temperature and humidity, which is conducive to survival. After 20-30 days to resume growth, fertilize every 10-15 days to promote growth, and pay attention to the regular prevention and control of diseases and insect pests, remove adventitious buds and branches in time, and cultivate good crowns.