Suitable latitude for apple growth
Apples need 1000- 1600 units of heat and 120- 180 days of frost-free weather. Warm during the day and cold at night, and as much light radiation as possible is the premise to ensure good quality. It is the best choice for apples to grow between 35-50 degrees north and south latitude, probably in Shaanxi, Gansu and Shanxi provinces of China, and is suitable for hillside terraces, plain mines and loess hills.
Apple is a deciduous arbor plant of Malus in Rosaceae, with tall stems and short and thick cylindrical branchlets. Leaf blade oval, smooth surface, serrated edge and stout petiole; The flowers are small and umbrella-shaped, pale pink and fluffy on the surface; The fruit is large, oblate, short and thick. Flowering in May; Result period: July -65438+ 10. Propagation methods include tuber method, grafting method, sowing method and cutting method. Natural reproduction of offspring depends on seed propagation, among which grafting reproduction is the fastest.
Matters needing attention in apple planting
1. Soil preparation: Apple trees need to grow in fertile and well-drained soil, so soil improvement is needed before planting. Organic fertilizer and fertilizers such as phosphorus and potassium can be added to improve soil fertility.
2. Planting time: The best planting time for apple trees is spring and autumn. Planting can be started after thawing the soil in spring, and planting can be started after drying the soil in autumn.
3. Planting method: Apple trees can be directly planted or grafted. When planting directly, put the saplings in the soil and cover the roots with soil. Grafting requires the treatment of rootstocks and scions, and then grafting.
4. Fertilization management: Apple trees need sufficient fertilizer, which should be fertilized 3-4 times a year, mainly with organic fertilizer, with appropriate amount of chemical fertilizer, and watered in time after fertilization.