1. 10- 10 The management precautions for newly planted pear seedlings are as follows: Planting. Before planting: firstly, remove the grafting film at the grafting interface, and keep the damaged main roots and excessively long lateral roots 15 cm for proper pruning. Seedlings should be soaked in clean water 1 ~ 2 hours according to water loss. When planting, the pruned seedlings should be soaked in mud or water solution with proper rooting powder and carbendazim, and disinfected to promote the rooting and survival of seedlings. Planting: Dig a hole with a depth of 10 cm by loosening the soil layer 50 cm square at a pre-designated position, spread the roots of pear seedlings around the planting hole, bury the roots with fine soil and step on them tightly to make a tree tray of 80 cm, which is slightly 20-30 cm higher than the ground. It is advisable to thoroughly water enough water and root water, and water each plant about 20 kg. Re-cover the soil until the seedlings are in the soil mark position of the nursery, exposing the marriage interface outside the soil. Then it is covered with a black plastic film with a square width of 1 m, and the surrounding is tightly sealed, which plays a role in warming and moisturizing and promoting the survival and growth of seedlings. Check the water content every 10 ~ 15 days. If the water content is insufficient, uncover half of the plastic film to save your life. At the same time, spraying 1 ~ 2 times of 1.8% sodium nitrate or seaweed nutrient solution after planting can promote callus formation and root growth, and improve the survival rate of seedlings.

2. Fixed stem shaping: according to the thickness of seedlings from 1 month to before germination, fix the stem at a height of 25-40 cm above the joint, cut off the upper part, and promote short branches to form dwarf and robust growth. Removing the buds below the grafting interface at any time is beneficial to the growth of branches above the grafting interface. Within fifteen months after planting, after each new shoot is pumped to about one foot, the lateral buds below the terminal buds are selected for coring, and generally no branches are pulled, so that it can stand upright and grow more vigorously. In winter, according to the strength of branches, the terminal buds are slightly cut. You can also pull branches early to form flower buds. After 15 months, the main branch and side branch were separated by holding, pulling and hanging, forming more branches and more short fruit branches. In order to put into production as soon as possible, it is unnecessary to emphasize the tree shape. After high yield, the branches with unreasonable arrangement and branches with weak light receiving ability should be gradually drained. After the trunk is divided into evacuation layers, the overall height of the tree is about 2 meters.

3. Fertilizer and water management: after sowing, before germination, according to the drought, water the seedlings before April without fertilization. Drainage and irrigation ditches should be arranged in the park to drain the rainwater for a long time and irrigate it during drought. From April to June, apply shallow (no digging) thin fertilizer (low concentration) every half month. The proportion is that a small amount of human and animal manure, 50 grams of urea and 0/00 grams of calcium superphosphate/kloc are added to each barrel of water. After mixing evenly, apply 8 to 10 kg to each tree. After June, dig holes and fertilize every other month. For the first time, three holes were dug staggered one and a half feet away from the stem of the seedling, and then staggered outward gradually. Apply 50 to100g of fine calcium superphosphate into the hole, then add 250g of urea (increase or decrease according to the size of the barrel) into each barrel of water and secondary human and animal feces, and stir evenly. Every tree hole should be filed with a small file, and the tree hole should be covered after it is slightly dried. Don't go near the trunk, so as not to damage the roots or young leaves.

4. Pest control: Aphids: 65,438+0,000-65,438+0,500 times of Agrocybe aegerita or 3000-5000 times of Actai are still used alternately. Acaricide: (also known as red spider): 1000- 1500 times acaricide or 3000-5000 times acaricide are still used alternately. Caterpillar: Use 1 0,000 times of Robam or 1 0,500 times of Agrocybe to control it alternately. Diseases: Young pear trees are strong, and generally no serious diseases will occur. Fungicides can be added to control pests. Spraying time for pest control should be carried out in sunny afternoon or evening. Spray the medicine on the back of the leaves as much as possible.

5. Soil management and intercropping: After the spring, the soil of the seedling pier is as thin as 80 cm. After being filled with water, it is covered with micro-film to keep moisture and keep warm, which is beneficial to survival and rapid growth. Weeds in the tree tray should be removed at any time, and interplanting of tall crops and short crops should be avoided in the pear box to avoid affecting the photosynthesis of pear seedlings and the physical and chemical properties of soil. It can plant dwarf vegetables, beans and medicinal materials with high economic benefits, and the short-term economic benefits can be used to plant dwarf mature and fertilize soil.

6. Introduction of Huangzunmi pear specialty: It is planted in March-June and June, with 65438+ 10, with 208 plants per mu (spacing of 4m* 1m). 3 years of 5000 kg -8000 kg per mu; Bagging 4000-7000. Well managed, it will reach 1 10,000 Jin-10.5 million Jin in 4-5 years, and the yield per mu will be1-10.3 million bags. Normal storage time is 3 months, and constant temperature storage time is 10 month. Huangzunmi pear has a positive shape and good taste, and its sugar content is above 22. Efficacy: moistening lung and resolving phlegm, clearing away heat and toxic materials, etc. The growth period of this variety can reach more than 50 years, and the market price of organic fruit is 10 yuan -30 yuan/kg. This product has been exported to many countries and won unanimous praise at home and abroad.