Site conditions of Li Jianyuan:
(1) Daily average gas temperature from April to October: Qiuzi pear 14.7-8; western pear 17.7-22.2; sand pear 15.5-26.9; white pear 17.7-22.2.
(2) Annual sunshine hours: From January to December, the number of sunshine hours is 1600 to 1700 hours.
(3) Annual rainfall: >=400 mm
(4) ph value: When 5.4, the plant grows robust and the result is good; when ph8.5, the result is affected, causing dead tree when it is serious.
Planting preparation:
1. Before the planting, the treatment of the field is deepened by 80-100 cm. At the same time, the soil fertilizer and weeds are applied. After the soil fertilizer and weeds are decomposed, the soil conditions of the lower layer can be improved. When the labor is insufficient, it can also be planted in a ditch along the line. The ditch is 80-100 cm deep and 100-150 cm wide. When the soil is returned, the soil is mixed with weeds and weeds. Since the roots of pear trees are mainly distributed over 30 cm, the fertile topsoil should be filled more than 30 cm.
2. Treatment of seedlings before planting The main roots of the selected seedlings should be properly trimmed, and the damaged part of the apex should be cut into flat shovel, soaked in water for one night, and then the roots of the seedlings after soaking are smeared with mud to prepare for planting.
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