The wasteland and saline areas can be fully utilized to plant date trees, but as much as possible should be selected for a garden that is free of pollution, is flat, has good drainage conditions, has strong soil permeability, has good air penetration, has high groundwater tables and is fertile. Early and small tree varieties can be cultivated with condensed, congested planting. Vegetables that are medium or large and produce late results may be planted in between. Trees can be planted between the fall of the leaves and the onset of the second year, in spring and autumn, bearing in mind the water。
I. The growth habits of date trees
The date trees are grown in mountain areas, hills or plains below 1,700 metres above sea level. They are heated fruit trees, with an average annual temperature of about 15°c in the production area, 13-15°c in the bud, 17°c in the branch expansion period, 22-25°c in the flower sitting season and 18-22°c in the fruit maturity period. The date trees are dry and wet, but the flowering period requires high air humidity. Otherwise, it would be detrimental to pollination. In addition, dates are highly radiant, sensitive to light, adaptable to soil, thin and saline resistant. But fear of the wind makes it necessary to avoid the wind during construction。
Ii. The method of breeding dates
1. Bridalism: the main method of matrimony is lumber and branches, the technical points of which are summarized in six words. "sweety," keep the ears fresh and clean. "photo" should be flat. `fair', the formation layers of the ears and the wood must be straight. “stand down” must be followed by connectivity. Quick, fast. `wet', then the burial or plastic bag shall remain wet. At the same time, five to seven days before the marriage, the pelican fields were watered and skinned easily。
2- break root: select a good breed of its roots, dig a ditch of 30-40 cm or less and 50 cm deep around the tree canopy before gestation, cut the roots below 2 cm in diameter, apply organic fertilizer in the break root ditch and fill them back immediately. During the growing season, the seedlings can be spruced, and in the spring of the following year they can be spruced, treated with abt root powder or other hormones, replanted and grown。
3. Roots and plugs: in late autumn, the fall crop combines to take root from the tree of a strong date, to grow 20-30 centimetres in diameter and to hide sand in the kiln. In the spring of the following year, a groove was opened, with a 45-kick angle inserted into the groove, exposed to 2 cm of the ground, and immediately watered after insertion. Roots are treated with root hormones and plastic sheeting is better。
4. Plugs: the wet sandbed before a puddle, the wet standard being that the post-pornhole of the sandbed is unfailing, when the puddle is punctured with a wooden rod, the slurry is inserted into the ear, the pore is larger than the diameter of the slurry that is inserted into the ear, and the pharmacological fluid is not squeezed out of the small hole wall and is less pharmacological. At a depth of about three centimetres, too deep, the base is prone to decay, too shallow, the ear of the plume falls, the root is exposed, the plume of the plume is tightened, and the river sand and plume are closely integrated。
Iii. Transfer technology of holding
Park selection: date trees are adaptable, soil conditions are not stringent and wasteland and saline land can be fully exploited in all areas. However, in order to achieve higher economic benefits and to produce quality, non-hazardous products, the environment, such as air, water and soil, should be chosen as far as possible, free from pollution, open and open, well-drained, soil permeable, ventilated, groundwater table high and soil-rich gardens. Trees are grown in mountainous and hilly areas, with the choice of deep and sun slopes, which are not suitable for planting。
2. Cultivation: the number of dates, the quality of the species, the strength of the tree, its resistance to disease and insects, the fracking of the fruit, the colour of the fruit, the high nutritional content and the taste。
(1) the best dry varieties at present are the golden thread, the golden thread, the non-nuclear red, the non-nuclear no. 1, the non-nuclear no. 3, the festivities, etc。
(2) among the pre-literate varieties, the excellent varieties used for fresh food are the king of precious precious, the mother of pepsi, and so on, and the excellent varieties used for processing are pear dates, rosy dates, etc。
(3) lately cooked varieties are mainly used for fresh food, with high-quality varieties such as magma dates, winter dates, etc. The new special varieties are fruit-shaped grinding dates, dates, etc., and tree-forming intra-teeth reds, dragon shaving dates, etc。
3. Cultivation models:
(1) the first is a condensed, condensed plant, which applies mainly to species with early results and small trees, with a range of 2 m x 3 m or 3 m x 2 m as appropriate。
(2) two are inter-cropping and apply primarily to species of medium or large trees with late results, with a range of 8-10 metres. The distance is 3-5 metres. Other crops can be grown early between trees。
4. Cultivation time: the period between the fall of the leaves and the onset of the second year of hibernation can be cultivated in spring and autumn. On the basis of years of experience with cultivation, it is difficult to reach more than 90 per cent after planting in the autumn, with two years and more of seedlings, and with immediate watering from spring. However, the rate of activity without water has also reached over 70 per cent after the fall planting, which is significantly lower in the spring than in the autumn。
