Orthopaedic Model,Bone For Practicng,Simulated Model Hongrui Medical Devices Co., Ltd. , http://www.zzcprtrainingmodel.com
1. Seeds are sown after stratification (about 40-60 days) and from late March to mid-April. Qiuzi pear (Yamanashi) sowing rate of 1.5-2 kg per acre, Du Li seeding large seeds per acre of 1.5-2 kg, small seeds of 1-l.5 kg, bean pear is 0.75-l kg; in the more arid Under the circumstances, the soil can be covered with 2-2.5 cm, and the soil of the easy-to-tie knots should be thinner and covered with grass. Management after sowing is basically the same as that of apple tree nursery. 2. Grafting methods are easy to survive using buds or branches. Because the activity of the formation of the pear tree stopped earlier than the apple, the budding period must be arranged before the apple. Some species sprout early in the spring like Yali pear and Ci pear, and the branching period should also be earlier. 3, pear buds and leaf pillows are larger. Buds require thicker rootstocks, generally more than 0.6 cm. Therefore, when the height of seedlings is about 30 cm, leave 7-8 pieces of large leaves to carry out topping to promote thickening. 4, in order to more seedlings, a good seedlings, but also in different seasons in different seasons to use different methods of grafting. 5, pear seedlings must meet the eligibility criteria to exit the nursery, require good joints, the main, lateral root integrity, more fibrous roots, seedlings thick, plastic belt with full buds, no quarantine pests and other objects.