First, control the shoots to grow prosperous and prevent the nectarine branching ability of the orchard. It is easy to pump the second branch or even the third branch, and the nectarine tree is very prosperous, especially the leggy before the result. The increase in the number of branch shoots, which often leads to deterioration of the light in the garden, the outward color shift of the fruit, and the decrease in yield. Therefore, attention should be paid to control during production. The main measures for control are: (1) Strengthen the control of fertilizer and water. In particular, the control of nitrogen fertilizer, in the annual growth period and after fruit picking, do not cut too much nitrogen to prevent shoots prosperous; (2) application of dwarf growth hormone control. In the shoot growth period, 5g/study of paclobutrazol in the ring groove or shoot spray on the shoots (200-300) X10-615% paclobutrazol at the shoot growth stage, the control effect is better; (3) The budding should be timely. The useless secondary branch/third branch and back shoot should be eradicated in a timely manner. If the eradication is not timely, the branch should be promptly thinned in order to maintain the good crown canopy permeability; (4) To maintain the uniaxial extension of the branch group and reduce the branch level number. Second, to strengthen the thinning of fruit and fruit, in order to increase the number of fruits due to the high fruit setting rate of nectarine. If the production of thinning and thinning fruit cannot keep up, it will cause the fruit to become smaller and affect the commercial quality of the fruit. Therefore, in the production should be strictly sparse flowers and thinning fruit, in accordance with the strength of the results of the growth of branches, in the early flowering period sparse flowers and thinning fruit, strong branches each leave 4-6 flowers, keep 2-3 fruit, Zhongzhi stay 2-4 Flowers, keep 1-2 fruit, short branches and bouquets of branches to stay double flowers, warranty fruit, ensure that the tree leaves about 120 per square meter of space in order to facilitate the full expansion of the fruit, improve the fruit of the commodity. Third, from the improvement of tree light to start, through the regulation of branch quantity, to promote fruit coloring Because of nectarine tree flourishing, it can be divided into columns several times a year. If the control is not effective, it can lead to poor fruit coloration, especially in the canopy and the lower part of the canopy. The fruit is poorly colored. Therefore, measures should be taken in production to promote coloring. (1) The “丫†font that is prone to light and Lifeng should be selected as the main tree shape; (2) In the budding stage, the buds should be wiped off in time, and the second and third branches should be cut off in the growing period in order to control the amount of branches and prevent (3) At the beginning of the fruit coloring period, the light-shielding leaves are removed and the fruit is fully bathed; (4) In the fruit coloring period, pull-branches are applied to increase the amount of light received in the canopy; (5) Reflective underground Membrane, improve the use of reflected light. Fourth, prevent fruit rust, keep the fruit surface clean and smooth nectarine due to hairless, fruit rust is easy to infect, fruit rust occurs, reduced commercial quality, affecting the improvement of production efficiency. Therefore, we must strengthen the prevention and control of concrete: (1) Strictly control the amount of branches, keep the park open, reduce the air humidity in the park, and suppress the occurrence of diseases; (2) fruit bagging for fruit protection; (3) for the protection of pharmaceuticals , In the rainy year, when the humidity in the garden is large, it is necessary to use 25% warmable chlorothalonil powder 2000 times solution or 65% warmable enzyme zinc powder to 500-600 times solution, 2% agricultural resistance "120 "200 times liquid spray protection, in order to protect the fruit surface clean, improve the commercial nature of the fruit, generally should be about every 7 days, alternating spraying with the above-mentioned pesticides, can control the hazards. Fifth, increase fruit flavor Nectarine production tends to appear lighter phenomenon, the main reason is due to excessive water supply or fertilization is irrational and early harvest caused by, and ways to increase flavor are: (1) restrict water supply. Especially during the fruit enlargement period, if it is not too dry, do not apply water easily to increase the accumulation of substances in the fruit and increase the flavor of the fruit; (2) increase the supply of substances, especially the application of organic fertilizer, and promote the accumulation of sugar in fruits. To make the fruit more sweet; (3) To harvest properly. In the beginning of the fruit coloring period, the fruit begins to enter the period of accumulation of nutrients. The longer the fruits grow, the more accumulated nutrients, the more fragrant the fruit, so it should be timely harvested.
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