Deciduous tree with strong polarity, usually vigorous growth and tall crown. The height of the tree can reach 15 meters, and it is generally about 3 ~ 5 meters high under cultivation conditions. The trunk is grayish brown, the old bark has irregular longitudinal cracks or flaking, and the branchlets are smooth. Fruit is a kind of kernel, and its color and size vary with varieties. Like light, like slightly acidic to neutral soil. It is most suitable for sandy soil with deep soil layer, rich organic matter and good ventilation and drainage.

2. Pierce

The application of pear early harvest and early maturity cultivation techniques needs to ensure a good growth environment, among which the requirements for environmental climate are strict. In order to ensure the normal growth and development of pear trees, growers need to choose suitable temperature for cultivation. Pear grows relatively fast in warm environment, so growers should provide higher temperature during the growth period and lower temperature during the dormancy period.

According to different pear species, the optimum growth temperature will also change, of which Pak Lei is 7-65438 05℃; Huanghuali is about10℃; The suitable temperature of pear is higher than 65438 05℃ and lower than 30℃.

Pear tree is a light-loving tree species. In sunny environment, the output will increase, while in dark environment, the output will decrease or even lead to zero output. The light duration required for the growth of pear trees in one year is1600 h. When the relative light intensity reaches 35%, the production rate of pear trees will increase, and when it is lower than 15%, the production rate will slow down.

Water accounts for more than 80% of pear fruit, which is the main component of pear, so the demand for water for pear growth is large.

3. Peaches

The main economic planting areas are in North China and East China provinces of China, and the relatively concentrated areas are Haidian District of Beijing, Pinggu County, Jixian County of Tianjin, Mengyin, Feicheng, Yidu, Qingdao, Shangshui, Kaifeng of Henan, Funing, Zunhua, Shenxian, Linzhang of Hebei, Baoji, Xi 'an of Shaanxi, Tianshui of Gansu, Chengdu of Sichuan, Dalian of Liaoning, Fenghua of Zhejiang, Nanhui of Shanghai and Wuxi of Jiangsu. Originally from China, it is widely cultivated in various provinces. It is cultivated all over the world.

4. Jujube

Jujube trees grow in mountainous areas, hills or plains below 1700 meters above sea level, and belong to warm fruit trees. The annual average temperature in the producing area is about 65,438+05℃, and it needs 65,438+03-65,438+05℃ in the germination stage, 65,438+07℃ in the branching stage and 22-25℃ in the flowering and fruit setting stage.

Jujube trees are drought-tolerant and waterlogged-tolerant, but high air humidity is needed at flowering stage, otherwise it is not conducive to pollination and fruit setting. In addition, jujube enjoys strong photophobia, is sensitive to light reaction, has strong adaptability to soil, and is barren and salt-tolerant. But we are afraid of the wind, so we should pay attention to avoid the tuyere in the process of building the garden. ?

5.strawberries

Strawberries like warm and cool climate. The growth temperature of strawberry root system is 5-30℃, the optimum temperature is 15-22℃, the optimum temperature of stem and leaf growth is 20-30℃, the freezing temperature of flower bud is-10℃, and the temperature of flower bud differentiation must be kept at 5-15. Strawberry in summer, when the temperature is higher than 30℃ and the sunshine is strong, shading measures should be taken.

Strawberry is a light-loving plant, but it has strong shade tolerance. Under the light intensity, the plant is short and strong, the fruit is small, the color is dark and the quality is good. Medium light, large fruit, light color, low sugar content and long harvest period; Weak light is bad for strawberry growth.

Strawberry has shallow root distribution, large transpiration and strict requirements for water, but its growth stages are different. Strawberries have slightly different water requirements. In early spring and flowering period, strawberry needs a lint percentage lower than 70% of the maximum soil water capacity.

The demand for fruit growth and ripening is the highest, reaching more than 80%. After harvesting, stolons and new adventitious roots should be removed, and the soil moisture content should not be lower than 70%. Autumn is the period when plants accumulate nutrients and form flower buds, and the soil water content should not be lower than 60%. Strawberries are not resistant to waterlogging, which requires good soil permeability, and pay attention to drainage in rainy season.

Strawberries should be planted in fertile, loose, neutral or slightly acidic loam. Too sticky soil is not suitable for cultivation. Strawberries can also be planted on sandy soil with more fertilizer and regular irrigation.

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