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Apricot Yulin region one of the more ancient dried fruit, but the presence of a single species, low yields, poor quality, economic efficiency and low. The the wild apricot control through Longwangmao excellent white jade flat, rush four flat apricot varieties test material, apricot typical climatic zones in Yulin City, Shaanxi Province, the introduction and high yield cultivation experiment, to a period of the Desert Rgeion apricot industry provide superior varieties and supporting high-yield cultivation techniques. The main contents and results are as follows: 1, apricot developed root system, fast growth, with Longwangmao, excellent, the Baiyu flat and swarm grafting affinity stronger as the rootstock grafted apricot. To the ordinary wild apricot rootstocks Apricot varieties, not only help to improve the survival rate of grafting, and interfaces faster healing. Through the winter sand storage, soaking live and gibberellin soaking live three seed treatment methods can be seen, the winter live earliest seed germination, seedling ground diameter and height growth capacity, then can be used as a rootstock seedling in large quantities, the provincial workers save time; Sand processing the highest seed seedling emergence, seedlings ground diameter and height growth than the winter live the small, who can be used as rootstock seedling a small number; late seed emergence time of 1000 mg / L Gibberellin, The germination rate is low, and a small amount of growth. 2, and the almond tree planting time and planting method is an important factor affecting the Apricot survival rate. Yulin semi-arid areas, the best period of the planting apricot spring in late March to mid-April, almond trees planted in the fall to wintering processing, due to low winter temperatures, less precipitation, the overlying sand burial time consuming; almond trees planted by 40-100mg / L ABT3 No. abt dipped in mud treatment to promote survival and early bud, has a significant role to accelerate growth. 3, and the almond tree root growth year three significant growth peak. The first peak in mid-April to mid-May after germination of the apricot, a large number of new roots sprouted. After mid-May, the amount of new root initiation gradually reduced. In late July to early August, the second peak root growth; growth for the third peak from the end of August to early October. 4, early April Kernelled, lengthened growth, from early May to late May for the fast-growing period. Enter the slow growth in June and to stop lengthening growth in mid-August. From mid-June to early July, the bold, fast-growing period. The the development branch growth by age, precipitation, temperature, and other factors the larger saplings period developmental sticks fast growth, the growth of large, non-obvious points of the Spring and Autumn shoot large trees obvious tip of the Spring and Autumn, but rare in summer precipitation case, stop the growth of early free fall tree formation, bouquet-like branches growing season is short, the amount of growth. 5, apricot fruit development can be divided into three periods: the first period about in late April and late May to mid-May, as the fruit fast growing period for the first time, the fruit weight and volume of the rapid increase in weight of up to 30% of the mature or so, the volume reached 60% of the mature fruit. The stone is not yet lignified, filled with a gel-like water-soluble substances. About in late May to early June, the slow growth period, the fruits of growth rate slow, gradual hardening of the stone, almond began to take shape. After mid third period of about 6 months, is the second fast growing period of the fruit, fruit length, diameter growth to accelerate rapidly enrich, seeds, pulp thickness increases. 6, age, size is one of the important factors that affect the the Apricot squid proportion. Of Apricot saplings, with old spur an increase in the proportion increased dramatically, squid amount increases; girdling, topping, cut the top could significantly increase the amount of apricot into flower, to improve flower buds quality and fruit setting rate. Mid to late May to early June is the the Apricot girdling best period; late April to late May is the best time of Apricot Topping, enter the end of June, topping the initiation of small branches, and a small amount of growth, flowering rate. Different periods of the different varieties of the scissors tip Longwangmao white jade flat and swarm best scissors shoot period late in late July to August, the best period of Yuichi varieties scissors tip at the end of August to early September. 7, four Apricot varieties of the fruits of economic traits, almond Longwangmao largest average weight of 20-25 grams, weighing an average of 3 grams of mononuclear shelling was 27-30%; swarm, fruit weight average 10-15 grams, monocytes weighted average of 1.9 g out jen rate of 33-35%; the Baiyu flat, fruit weight averaged 18.4 g monocyte weight of 2.6 grams and the benevolence was 30%; distinctions and one single fruit 9-10 grams of weight, single kernel weight 0.7-0.75 grams shelling rate of 42-43%. Four varieties of 30 to 60 kilograms per mu, almonds, arranged in descending order of 1-4 years after the colonization of various varieties of cumulative production order Longwangmao gt; Yuichi gt; swarm gt; the Baiyu flat.
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