The steps of establishing orange seedling nursery with growing sugar

1. Select a place

The nursery of sand sugar orange should choose flat land with convenient transportation, far away from disease and pest epidemic area (more than 3000 meters away from old orange orchard and citrus Huanglong disease garden), leeward to the sun, sufficient water source, open topography, deep tillage layer, low groundwater level, gentle slope land or paddy field with convenient drainage and irrigation, it is best to make paddy fields or paddy-upland rotation fields with unbred seedlings before selection. When choosing paddy field as nursery land, pay attention to the groundwater level should not be too high, the groundwater level should be more than 50 cm from the ground. Loam with more organic matter, sandy loam or red soil with high content of organic matter and good irrigation conditions can also be used as nursery. Dry land with high terrain and poor soil, sandy land and low-lying, over-sticky land are not suitable for nursery.

two。 Planning

The complete professional nursery is composed of mother garden, breeding area and rotation area. The breeding area is a place for breeding seedlings, which can be divided into sowing orchard and grafting orchard, the former is used to sow rootstock seeds and provide rootstock seedlings, and the latter is used to cultivate grafted seedlings, the area ratio of the former to the latter is 1 ┱ 6; the rotation area is set up to overcome the disadvantages of continuous cropping and reduce diseases and insect pests. The nursery land can be used as a sugar orange nursery after 1-2 years of rotation (legume crops and vegetables are better). In order to save land, the sowing garden can also use the corner of the front and back of the house to sow and raise seedlings.

3. Land preparation

The nursery land should be ploughed (deep plough 25-30 cm) 1 month before sowing, plough and rake 2-3 times, rake flat and rake fine, remove weeds, in the last time Harrow, each mu (mu is the unit used to indicate the area, has been abolished, instead of square meters, hectares and so on. 2000 kg of rotten pig, cow manure or compost, 20 kg of superphosphate and 50 kg of lime. In order to control underground pests, 2 kg of 3% furan granules should be sprinkled. The seeding garden seedling bed is made into a border with a width of 80-100 cm and a height of 20-25 cm; the grafting garden seedling bed is made into a border with a width of 60-80 cm and a height of 20-30 cm (low-lying land, paddy field height 25-30 cm). After making the border, rake the border surface flat and fine, and then sow seeds in a shallow trench. In order to inhibit the growth of the main root of seedlings, promote the growth of lateral roots, and improve the survival rate of transplanting, it is best to spread plastic film at the bottom and pile fertile garden soil (15-20 cm high) on the bottom of soil preparation. 5000 kg of fertile soil and 500-1000 kg of mature cow dung and pig manure are used per mu, and then mixed well with the garden soil, and finally into a seedbed, you can sow seeds in shallow ditches.