First, the choice of garden nursery. Nursery is a highly intensive business. The choice of nursery land directly affects the level of seedling production, quality and cost. Therefore, when constructing a nursery, especially a fixed nursery, it is necessary to comprehensively investigate the operating conditions and natural conditions, and consider carefully and choose carefully. (I) Operating conditions The nursery sites should be selected as close to the city as possible to facilitate transportation, so that the site conditions for nursery land are similar to the greenery, so that the seedlings cultivated can be well adapted to the environmental conditions of the greenery. It can also avoid the long-distance transportation of seedlings, increase planting costs, reduce the quality of seedlings, and affect the survival rate of planting. If it is not possible to achieve the requirements of “greening on the spot and growing seedlings on the spotâ€, nurseries should choose places where traffic is convenient to ensure that the raw materials needed for seedlings and nursery can be transported and shipped in time. (b) Natural conditions 1. Select the soil. Water, nutrients and air necessary for the growth of seedlings are all derived from the soil. The soil is also the carrier for the growth and development of the seedling root system. Therefore, the choice of soil in the cultivation of strong seedlings is very important. In general, the nursery should choose more fertile sandy soil or loam. Because this kind of soil has loose structure, good water permeability and ventilation performance, it has strong water retention and fertilizer retention, is conducive to soil microbial activity, is not easy to compact, easy to unearth young sprouts, the root system of seedlings grows and develops well, and soil cultivation and raising work are convenient. . Therefore, it is best to choose such soil seedlings, especially conifers. 2. Sufficient water supply. The nursery should be as irrigated as possible, especially in dry areas. Therefore, the nursery is best located near rivers, lakes and reservoirs where water is abundant and irrigation is convenient. The groundwater level is generally 1.5-2 meters for sandy loam and 2.5 meters for light clay loam. 3. The terrain is suitable. The nursery should be placed in a well-drained flat area with a gradient not exceeding 3%. In areas with undulating terrain, droughts in North China and Northwest China and northwest wind hazards are the main contradictions. It is advisable to face slopes from the southeast to northwest winds. The south slope is more arid and the east slope is more frosty. Not suitable for nursery land; and warm and rainy in the south, the southeast, northeast slope is better, the south slope and the southwest slope of direct sunlight, seedlings easily burned. 4. Disease and pest situation. The selection of nursery sites requires pest and disease surveys. For example, the soil has suffered from diseases such as root nodules, purple feathers, pupa, and root nodules. This soil is not strictly treated and must not be used as a breeding ground. Second, the reasonable layout of garden nurseries. The garden nursery is a base for fostering landscaping and nursery stocks. The planned establishment of garden nurseries is a prerequisite for the development of landscaping. China's existing garden nurseries, according to the length of operating time can be divided into fixed nursery and temporary nursery. The fixed nursery is a nursery that specializes in providing garden green seedlings. The temporary nursery is a park, botanical garden, zoo, etc. to be established in the future as a nursery for the cultivation of garden nursery land. Temporary nurseries can make full use of the land and cultivate seedlings on the spot. This will not only save land but also ripen the soil. The improvement of the environment will create favorable conditions for the future construction of parks and botanical gardens. At the same time, the large seedlings cultivated in these nurseries can be directly applied to the future construction of the garden, and the seedlings have strong adaptability, good growth and high survival rate. Garden nursery can be divided into large, medium and small sizes according to the size of the area. The size of a large nursery is generally more than 20 hectares, the medium-sized nursery is generally 3-20 hectares, and the small nursery is less than 3 hectares. The combination of large, medium and small nurseries provides a reasonable layout for the supply of quality seedlings for urban landscape greening. Double Breast Pump Electric,Silicone Breast Pump,Double Breast Pump,Bpa Free Breast Pump NINGBO YOUHE MOTHER&BABY PRODUCTS CO.,LTD , https://www.oembreastpump.com