The non-nuclear crisp jujube is a non-nuclear fresh food species discovered in recent years in the excavation and development of local fine variety resources by the Institute of Horticulture, Xuecheng District, Zaozhuang City, Shandong Province. The variety matured in mid- and late September, and the fruit was oblong, with an average fruit size. It weighs 16.9 grams and has a maximum fruit weight of 39 grams. The peel is bright red, bright and lustrous. The flesh is yellow-white, dense in texture, sweet and brittle, containing 35.6% soluble solids, 19.13 total sugar, completely degraded nucleus, edible rate nearly 100%. , fresh food quality and so on. The cultivation techniques are briefly described as follows:
First, the method of colonization. Autumn and winter will be cultivated to dig 1 m square planting large hole, each hole into the high-quality soil miscellaneous fertilizer 30 kg, 1 kg of diammonium phosphate, filling the water sinking. When the spring buds are sprouting, they are planted with 60-70 plants per acre with a row spacing of 3.5 to 4 meters. After planting, straighten the tree tray and cover it with 1m square mulch. When planting seedlings, seedlings should be selected to be more than 0.6 cm thick and above 80 cm high quality seedlings.
Second, soil fertilizer management. Every autumn, the deep excavation is carried out in the digging hole. The width and depth are about 0.6 meters. Each plant applies 15 kg of high-quality soil-fertilizer, 1 to 2 kg of phosphate fertilizer and 0.5 kg of nitrogen fertilizer. Every year before the germination and during the fruit expansion period, the available nitrogen fertilizer is chased once. Each time the strain is applied to 0.5 kg, it is applied on a tree plate and watered after application. During the dry months of May, September and September, water was poured one at a time.
Third, the plastic trim. (1) 1 to 3 years after planting, it should be pruned in a spindle shape and it should be 60 to 80 cm in height. The main branch is about 10, and the base angle is 80 degrees. The main branch is arranged spindle-like on the stem and the main branch spacing is 30-40 cm. In the second year, the main branch was selected according to the spacing of 30-40 cm, and other branches were removed. In the production season, the main branch is drawn at an angle of 80 degrees. (2) Enter the high yield period. 1 Winter Shear: In this period, the tree shape is basically formed. The pruning should focus on solving the conditions of ventilation and light transmission. Pay attention to sparsely erect standing branches, sprouting twigs, leggy branches, over-close branches, light or short cuts, and wait until the result is weak. Retract, pay attention to maintain large and medium-sized branch spacing 30 to 40 cm, branches spacing 10 to 20 cm. 2 Summer Scissors: The main way is to control the growth of jujube heads and erect standing branches. During the period of rapid growth of jujube heads, the heads of the jujube heads, which were not properly positioned, were not used as main branch extension branches and renewed shoots, were picked up, and 2 to 3 young leaves of the top of the jujube head were removed.
Fourth, pest and disease control. Winter ploughing of tree trays eliminates overwintering disease sources. In the middle and late May of this year, 1 or 2 times of pyrethroid pesticides were used to prevent and control juvenile armyworm and other pests. In the end of June, 80% of dichlorvos and 50% of fungi were sprayed, which were 800-1000 times more effective in controlling leafhoppers, spider mites, Zaojiao and anthracnose. In the second half of July, two pesticides were sprayed with pyrethroids to control peach borer and leafhoppers. In the severe year of jujube rust, triadimefon was applied. Before the wheat harvest, before the flood season and before the ripening, spray 200 times Bordeaux mixture to prevent and control early defoliation and fruit diseases.
Fifth, improve the rate of fruit set. In the middle of June, full bloom sprays 5~15ppm of gibberellin 1~2 times, or girdling, the width is 0.3~0.6cm, which can effectively promote fruit setting.
First, the method of colonization. Autumn and winter will be cultivated to dig 1 m square planting large hole, each hole into the high-quality soil miscellaneous fertilizer 30 kg, 1 kg of diammonium phosphate, filling the water sinking. When the spring buds are sprouting, they are planted with 60-70 plants per acre with a row spacing of 3.5 to 4 meters. After planting, straighten the tree tray and cover it with 1m square mulch. When planting seedlings, seedlings should be selected to be more than 0.6 cm thick and above 80 cm high quality seedlings.
Second, soil fertilizer management. Every autumn, the deep excavation is carried out in the digging hole. The width and depth are about 0.6 meters. Each plant applies 15 kg of high-quality soil-fertilizer, 1 to 2 kg of phosphate fertilizer and 0.5 kg of nitrogen fertilizer. Every year before the germination and during the fruit expansion period, the available nitrogen fertilizer is chased once. Each time the strain is applied to 0.5 kg, it is applied on a tree plate and watered after application. During the dry months of May, September and September, water was poured one at a time.
Third, the plastic trim. (1) 1 to 3 years after planting, it should be pruned in a spindle shape and it should be 60 to 80 cm in height. The main branch is about 10, and the base angle is 80 degrees. The main branch is arranged spindle-like on the stem and the main branch spacing is 30-40 cm. In the second year, the main branch was selected according to the spacing of 30-40 cm, and other branches were removed. In the production season, the main branch is drawn at an angle of 80 degrees. (2) Enter the high yield period. 1 Winter Shear: In this period, the tree shape is basically formed. The pruning should focus on solving the conditions of ventilation and light transmission. Pay attention to sparsely erect standing branches, sprouting twigs, leggy branches, over-close branches, light or short cuts, and wait until the result is weak. Retract, pay attention to maintain large and medium-sized branch spacing 30 to 40 cm, branches spacing 10 to 20 cm. 2 Summer Scissors: The main way is to control the growth of jujube heads and erect standing branches. During the period of rapid growth of jujube heads, the heads of the jujube heads, which were not properly positioned, were not used as main branch extension branches and renewed shoots, were picked up, and 2 to 3 young leaves of the top of the jujube head were removed.
Fourth, pest and disease control. Winter ploughing of tree trays eliminates overwintering disease sources. In the middle and late May of this year, 1 or 2 times of pyrethroid pesticides were used to prevent and control juvenile armyworm and other pests. In the end of June, 80% of dichlorvos and 50% of fungi were sprayed, which were 800-1000 times more effective in controlling leafhoppers, spider mites, Zaojiao and anthracnose. In the second half of July, two pesticides were sprayed with pyrethroids to control peach borer and leafhoppers. In the severe year of jujube rust, triadimefon was applied. Before the wheat harvest, before the flood season and before the ripening, spray 200 times Bordeaux mixture to prevent and control early defoliation and fruit diseases.
Fifth, improve the rate of fruit set. In the middle of June, full bloom sprays 5~15ppm of gibberellin 1~2 times, or girdling, the width is 0.3~0.6cm, which can effectively promote fruit setting.
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