High quality apple seedling cultivation techniques

High-quality apple seedlings cultivation technology points 1. Cultivation of high-quality apple seedlings We must choose the right field: choose the deep soil, fertile sandy soil or light sandy soil

The groundwater is about 1.5m, the soil pH is 5.5~7, and the average slope is less than 5 degrees.
2. Apple seedlings should be in suitable climatic conditions: the average annual temperature above 4.5 degrees Celsius, the absolute low temperature of not less than -32 degrees Celsius, greater than or equal to 10 degrees Celsius

The accumulated temperature is above 2600 degrees Celsius, and the annual precipitation is between 400 and 700 mm.
3. Apple Seedlings: Selection of cold-resistant, adaptable, and well-tolerated sorbus seedlings with a strong binding affinity 4. Field management (1) Soil management, growth

Seasonal tillage and weeding in the season, harvesting fruits in the autumn and deepening the soil before deep-frozen, and shave the trees in the middle of April or early October to the top

10-20cm, and cover plates with green manure crops or weeds.
(2) Fertilizer management: Basal fertilizers are used in autumn and mainly include organic fertilizers such as soil manure, compost, bone meal, grass ash and peat.
Top dressing 2-3 times a year, the first time in mid-April, mainly nitrogen fertilizer, with phosphate fertilizer, the second time in late June, the main application of nitrogen fertilizer, the third is July

In the early August, phosphorus and potash fertilizers were the main components. Followed by topdressing, flowering spraying 0.3 boric acid once, from July to August spraying 0.3% potassium dihydrogen phosphate 2 times.

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