Introduction of citrus notes four issues
Since 1997, the Department of Economic Crops of the Hunan Provincial Department of Agriculture has undertaken the national fine varieties and technology introduction project for citrus varieties, and introduced a number of citrus varieties from the United States, Japan, and other countries. Some varieties of fruit are now available and have excellent traits. In December last year, the Provincial Department of Agriculture organized a news conference for the introduction of citrus varieties. Many farmers asked about the introduction. It is currently in the season of citrus planting and high seeding. The following four issues should be noticed throughout the introduction. First, choose the appropriate variety. Among the citrus varieties introduced, there are 30 varieties such as orange, pomelo, tangerine and miscellaneous citrus. Due to the ecological conditions of the country of origin and the genetic diversity of the varieties, the requirements for the ecological environment of the place of introduction differ. According to the basic principles of citrus quality division, some areas with good microclimate conditions in Xiangxi, southern Hunan and central Hunan can be introduced into oranges and pomelo: such as red meat navel orange, fuben, newhall, moisture-resistant navel orange, hb grapefruit, strong dre heart pomelo. In Hunan and Hunan, the broad-leaved citrus production areas can be introduced into the citrus, miscellaneous oranges: such as Yamashita red, Xiangshan red. Specific to an orchard species should not be miscellaneous, 1 to 2 varieties can be, it should focus on creating a product production base. Second, choose for planting units. Scion and seedlings should be purchased from the country's designated parent garden or professional nursery. In order to accelerate the observation, screening and promotion of introduced varieties, the Economic Crops Division of the Provincial Department of Agriculture has designated the provincial economic crop development center to take the lead to form a combined citrus seedling and seedling plant, establish a citrus seed plantation nursery, and carry out nursery plant expansion. This year and next year A small number of seedlings can be reproduced. Contact Tel: 0731-4423636. Third, buy high quality seedlings. High-quality scion and seedlings require that branches and leaves grow robustly and fully, with more than two branches, thick rounded bases, dark green leaves, no pest damage, good healing of grafted interfaces, and straight roots and well-developed root systems. It is best to purchase seedlings from container seedlings or nutrient nursery beds, and scion produced by virus-free cutting gardens. Container seedlings grow fast, generally 1 to 2 years earlier. Fourth, perform the purchase and Miao formalities. Citrus fruit is a perennial fruit tree, and it usually takes 3 to 5 years for the seedlings to be planted after high colonization. In order to avoid the introduction of counterfeit and inferior seedlings, when introducing seeds and seedlings, it is necessary to sign a contract with the seedlings for identification of the origin, variety, quantity, and quality specifications, and apply for quarantine of citrus pests and diseases at the local county or above phytosanitary authority. Quarantine qualified before use. China Agricultural Network Editor