1, Fengjie: Fengjie navel orange is a famous fruit with the largest planting area and the highest yield in Chongqing. Fengjie navel orange Fengjie navel orange is generally orange or orange red. Fengjie navel orange has seedless, juicy flesh, bright color, smooth skin, crisp and tender entrance, sweet and delicious. Among the navel orange varieties, the best quality is "Washington navel orange".
2. Gannan: The story of Gannan navel orange begins with Yuan Shougen planting the first navel orange tree in 197 1 year. Gannan navel orange has become the three major navel orange brands in the world, and Ganzhou has the largest planting area in the world. Gannan navel orange has a large shape, bright orange red, smooth and beautiful appearance, crisp and tender meat, sweet and fragrant flavor.
3. Xinning: Xinning navel orange is one of the four navel orange bases in China. In 1978, it was designated as one of Hunan 15 and national 100 citrus production base counties. There are navel oranges with an area of 23,000 mu, with an annual output of 6,000 tons and an export of 2,000 tons. The output and export volume are the first of the four navel orange bases in China.
4. Zigui: Zigui navel orange Yichang produces citrus with a long history. Qu Yuan's Ode to Orange proves that Yichang has cultivated citrus at least two thousand years ago.
Method of digging holes and planting
1, hole-drawing: the planting density is 600-750 plants/hectare, and the plant spacing is 3.5-4m× 4m, and the density is based on the principle of facilitating agricultural activities. Dig the planting holes in advance (80cm in length, width and depth).
Buried base fertilizer, which is mainly organic fertilizer, is applied in layers. When covering soil, weeds and soil miscellaneous fertilizers are filled in the bottom layer, and topsoil and farmyard manure are filled in the middle and upper layers, and the pure land is kept within 30 cm from the ground. And make it into a tree tray 30 cm above the ground for planting.
2. Planting: Generally, it is planted before the spring shoots germinate in February-March or after 10- 1 1 month autumn shoots mature, with high survival rate. When planting, choose virus-free navel orange seedlings, tear the nutrient bucket to keep the root system intact, put it in the center of the planting hole, gently lift the seedlings up while filling in, so that the roots are closely connected with the soil and then drenched with fixed root water, and make a tree tray with a diameter of 1 m around the seedlings.
Within 1 month after navel orange seedlings are planted, according to the weather conditions, it will be drenched for 3-4 days 1 time; Cover the tree tray with weeds or straw to reduce water evaporation, keep the soil loose, keep the soil temperature, promote new roots and improve the survival rate.
Baidu Encyclopedia-Navel Orange