The date trees are grown in mountains, hills or plains below 1,700 metres above sea level. They belong to the heliogenic fruit tree, with annual temperatures of about 15°c in the area of production, which require 13 to 15°c in the bud, 17°c in the branch extension period, 22 to 25°c in the flowering season and 18 to 22°c in the maturity period of the fruit. The date trees are drought- and flood-resistant, but the flowering period requires a high degree of air moisture, otherwise the pollination is detrimental. In addition, dates are more radiant, sensitive to light, adaptable to soil and resistant to infertile and saline. However, fear of the wind should be avoided during the construction of the park。
Tree breeding methods
1. Marriage: the method of marriage is mainly wood sprouts and branches, the technical elements of which are summarized in six words. "sweet", keep the ears fresh and clean. "stand down." scratch level. "accurate": the beams and aluminum formations are aligned. “stand tight” and then tie tight. "quick" operations are fast. "wet", burial after marriage or maintenance of humidity in plastic bags. At the same time, five to seven days before the marriage, shedding water in herb tree nurseries makes it easier to decorate。
2. Broken roots: the seedlings of the choice of a good breed, before they germinate, dig a ditch 30 to 40 centimetres wide and 50 centimetres deep outside the tree canopy, cut the roots below 2 centimetres in diameter and apply organic fertilizer in the breakout ditch, then fill them back. The growing season can produce seedlings, which can be dug in the spring of the following year, with the use of abt for root powder or other hormone treatment, for planting in a nursery and for breeding。
3. Roots: at the end of the autumn, the fall crop combines to take root from a robust date tree, cutting up 20 to 30 centimetres, rooting 1 to 4 centimetres in diameter, and hiding sand in the kiln. In the spring of the following year, a groove was opened, with its roots inserted in the gutter by a tilt of 45 angles, and the surface was exposed to 2 cm, which was then watered. Roots are treated with root hormones and plastic sheeting is more effective。
4- plugs: wetted sandbeds, wet standards, and unfailing boreholes, perforated by a small wooden bar, perforated by a little plaster, with a small pore greater than the diameter of the plume, so that the fluid is not squeezed off by a small hole and is less pharmacist. The piping depth of about 3 cm is too deep to cause the base to rot, to be too shallow, to be dumped and rooted, to be exposed, and to be squeezed into the post-plugged hole, so that the river sands and ejaculations are closely integrated。
Tree planting techniques
Park selection: date-trees are more adaptive, soil conditions are less demanding and wasteland and saline land can be fully exploited for planting. However, in order to achieve higher economic benefits and produce quality, non-hazardous products, as much as possible, the environment, such as air, water and soil, should be free of pollution, with open terrain, good drainage conditions, strong soil permeability, good aerobics, high groundwater tables and fertile ground. Trees are grown in mountainous and hilly areas, with the choice of a very deep slope, which is not suitable。
2. Cultivated species: the variety of date-trees is large, and a high-quality species must be well-growed, disease-resistant, fruit-resistant, fruit-shaped, fruit-colored, nutritionally high content and taste. The best varieties currently used for dry production are the golden thread, the golden honey, the non-nuclear red, the non-nuclear, the non-nuclear, the non-nuclear, the non-nuclear, the non-nuclear, the radiant dates. Among the pre-literate varieties, the excellent varieties used for fresh food are the king of precipice, quake, precious pear, and so on. Lately refined varieties are mainly used for fresh food, with high-quality varieties such as mace dates, winter dates, etc. New special varieties, such as special grinding dates, dates, etc., red in strange trees, roses, etc。
3 cultivation model: first, low-intensity planting, which is applied mainly to species with early results and small trees, with a range of 2 m x 3 m or 3 m x 2 m. The second is inter-cropping, which is mainly applied to medium-sized or larger species with later results, ranging from 8 to 10 metres in rows. Range 3-5 meters. Other crops can be grown early in the trees。
4. Cultivation time: the whole resting period between the birth of the date tree and the onset of the second year of life can be cultivated in spring and autumn. Based on years of experience with cultivation, with seedlings grown in two years and more, the rate of survival can easily reach more than 90 per cent in the spring and over 90 per cent in the autumn, even after planting. However, when established, autumn planting can reach more than 70 per cent, even if it is not watered, and if it is not watered, the rate is significantly lower than in autumn planting。
The date cutting technique
1. The date cutting is suitable for winter, the winter date tree is dormant, and there are many dead branches on the tree body that are not suitable for presence, which, if not cut off in time, will be detrimental to the growth of the next date tree. During the winter, date trees are fixed, which, because of their slow reaction, do not have a significant impact on them, while stimulating their second year of growth. Second, date-cutting can also take place in the summer, when the branches grow so strongly that, in order to avoid the nutrient depletion caused by the excessive growth of branches, it is necessary to cut the trees that are overgrowing in order to ensure high yields。
2. The date cutting technique requires respect for some basic options, such as the principle of “pre- and back-control, plug-down”, which would presumably mean trying not to trim the date tree during the pre-growth period, i. E. Between one and two years, but when the tree crown reaches the height we want, we have to apply the cut-off control, i. E. Blocking the tree up and directing the date tree in its direction。
3. The methods used to trim the dates range from one to the other. It is common for dates to be cut in branches, pull branches, circumcised, bundled, sprouts, hearts, twists, etc., each method or method to achieve a certain purpose. The date cutting technique is a more specialized one, and it is not enough for us to know some theories, but we must have some practical experience. There are some differences in the circumstances of each date tree, and we use different methods。
