The seedlings of Shatangju in Guangxi are now 2- 1 in 4 yuan and 4- 1 in 6 yuan.

1. When will it be planted in sugar orange?

The planting period of sugar orange, like other citrus fruit trees, can be planted after the new branch matures and before the next new branch germinates, which can generally be divided into two periods: spring planting and autumn and winter planting. However, all localities can choose according to the actual situation, and spring sowing should be carried out in the middle and late March to early April. At this time, the spring buds turn green, the temperature rises, there is more rain, and it is easy to survive. Planting in autumn and winter begins in the middle of 65438+ 10 after the autumn shoots mature, and can be planted until the end of 65438+ 10 in the following year. However, the flower bud differentiation of sugar orange seedlings planted in165438+February1October was damaged, so there were many buds in the spring shoots that germinated the next year, which affected the rapid growth of young trees. But no matter when planting, we should spray the roots, cover the trees, keep the soil moist and ensure survival.

Second, what are the cultivation techniques?

(1) dig a planting pit

The length × width× depth of Shatangju planting pit is 0.5×0.5×0.5 m respectively. When digging a pit, the topsoil and the core are stacked separately. When returning to the pit, put soil and miscellaneous fertilizer 10 kg, weeds 5 kg, phosphate fertilizer 1 kg and lime 0.5 kg in each pit. When returning to the pit, mix soil miscellaneous fertilizer, phosphate fertilizer, lime, topsoil and weeds evenly and return to the pit in layers. The planting specification is 2.5× 3m, and 80 plants are planted per mu.

(2) Seedling planting

The planting depth of Shatangju should be in the original position of the seedlings. When planting, the roots should be scratched first, so that the roots can be naturally compacted. After planting, the roots should be watered and soaked, and covered with 10cm thick weeds or covered with plastic film for heat preservation and moisture retention. Water it every night for the first three days, and then every other day. After a week, it will be showered every seven days or half a month according to the weather until the rainy season.

(3) Soil management

It is necessary to dig deep pits and conserve soil when planting sugar chrysanthemum. It is forbidden to plant tall plants such as corn and wheat in the garden, and reasonable intercropping and intertillage weeding should be done in the orchard. The soil layer is required to be deep (60 cm) and fertile. The ph value of soil is 5.5 ~ 7.0. The slope of the orchard is less than 25 degrees. When planning a garden, there should be necessary roads, irrigation and drainage, water storage and ancillary building facilities. In terms of specific planning, we should concentrate on one place as much as possible and build gardens in places with good traffic and water conditions.

Fertilizer and water management

1. Fertilization principle: To fully meet the demand of blood orange for various nutrient elements, it is advocated to apply more organic fertilizers and rationally apply inorganic fertilizers and formula fertilizers. According to the results of leaf analysis, orchard soil analysis and blood orange phenology, fertilization is guided.

2. Fertilization method: soil fertilization is the main method, combined with foliar fertilization by mining method, and the concentration is 65,438+0,000-65,438+0,500 times. Ring furrow fertilization, furrow fertilization, hole fertilization and soil surface fertilization are adopted.

3. Fertilization of young trees: apply fertilizer thinly, mainly nitrogen fertilizer, with phosphorus and potassium fertilizer. Apply fertilizer 5-6 times in spring, summer and autumn when bamboo shoots emerge, and apply 0.4 kg of ammonium carbonate or 0.2 kg of urea each time in March, May, June, July, September and June. 1 ~ 3 young trees should be applied with pure nitrogen 100 ~ 400g every year, and the ratio of nitrogen, phosphorus and potassium is1.0: (0.4 ~ 0.5):1.0.

4. Fertilization for adult trees: Fertilize the adult trees for four times, namely germination fertilizer, fruit protection fertilizer, fruit strengthening fertilizer and fruit picking fertilizer. Generally, the amount of fertilizer applied is 2-3 kg of chemical fertilizer and one load of manure. Fruit-keeping fertilizer1~ 2kg phosphorus and potassium fertilizer+1 kg chemical fertilizer. Strong fruit fertilizer 1 ~ 2 kg chemical fertilizer+1 ~ 2 kg phosphorus and potassium fertilizer. The fruit picking fertilizer (base fertilizer) is mainly organic fertilizer, and each plant is applied with 50 ~ 100 kg of organic fertilizer and 0 ~ 2 kg of chemical fertilizer.

5. Water management: irrigate when the soil is dry, and drain when the water accumulates.

(5) shaping and pruning

1, plastic principle: adjust measures to local conditions, prune trees, properly promote and inhibit, ventilate and transmit light to achieve three-dimensional effect. The trunk is 20 ~ 40 cm high, and the trunk branches (3 ~ 4 branches) are scattered on the trunk. The branching angle of the main branch is 30 ~ 50, and 2 ~ 3 auxiliary main branches are left on each main branch. Generally, after the third main branch is formed, the central trunk of this kind is cut off and twisted to one side to form a fruiting branch group.

2. Young tree pruning: mainly light pruning. After selecting the extension branches of the class center and the main branches and the extension branches of the auxiliary main branches, moderate or even severe pruning is carried out, and the growth balance among the main branches is adjusted according to the pruning degree and the direction of cutting buds. In addition to properly thinning the over-dense branches, the inner branches and weaker branches in the middle and lower part of the crown should generally be retained.

3. Initial fruiting period: Continue to select short cutting to deal with trunk extension branches at all levels, erase summer shoots, and promote autumn shoots to be robust. In autumn, measures such as ring cutting, root cutting and water control are taken to promote the flowering of Wangshu.

4. Trees in full fruit stage: retract the fruiting branches, flowering branches and declining branches in time, and cut off the shading branches, dead branches and insect branches.