First, to control the growth of branches and shoots to prevent the nectarine branching ability of the orchard, and it is easy to pump the secondary branch or even the third branch, and the nectarine tree is very prosperous. In particular, the number of leggy shooters before the result is large and long, Often led to deterioration of light in the park, the color of the fruit moved out, the yield decreased. 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 phytohormone control. In the shoot growth period, 5g/study of paclobutrazol in the ring groove or shoots (200-300) and 10-615% paclobutrazol in the shoots during the shoot growth period have better control effect; (3) The buds should be promptly wiped. For useless secondary branch, tertiary branch and back bud should be promptly erased. If the eradication is not timely, the branches should be timely, in order to maintain good canopy permeability; (4) to maintain the uniaxial extension of branches, reducing the number of branches. Second, to enhance the thinning of fruit and fruit, to increase the number of fruits due to the high rate of nectarine fruit set, production if the thinning fruit can not keep up, will lead to smaller fruit, affecting the fruit of the commodity. 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, to improve the tree light, and promote fruit coloring Because nectarine tree is prosperous, it can branch many times a year, if poor control, easy to cause poor fruit coloring, especially in the crown canopies and lower canopy fruit coloring is poor. 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) The buds should be eradicated in time to eradicate the sprouts, and the second and third branches should be cut off in time to control the amount of branches to prevent the growth period. (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 prevention and control. Specifically, we should: (1) Strictly control the amount of branches, keep the garden open, reduce the air humidity in the garden, and suppress the occurrence of diseases; (2) fruit bagging for fruit protection; (3) carry out pharmaceuticals Protection, in rainy years, when the humidity in the garden is large, 25% wettable chlorothalonil powder 2000 times or 65% wettable zinc powder 500-600 times liquid, 2% agricultural resistance “120â€200 should be used in time. Double 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, to promote the accumulation of fruit sugar, increase the flavor of fruits and nectarines in the production of fruit flavor tends to fade, the main reason is due to excessive water supply or fertilization is irrational and early harvest caused by, and ways to increase the flavor are: (1) restrictions Water supply. Especially during 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 material. Pay special attention to the application of organic fertilizers to increase tree nutrients. When the fruit is colored, it is appropriate to increase the frequency of fertilization on the foliar surface, and the key is to spray potassium fertilizer to promote the accumulation of sugar in the fruit, so that the fruit becomes more fragrant; (3) It should be harvested in an appropriate period. In the beginning of the fruit coloring period, the fruit begins to enter the period of nutrient accumulation. The longer the fruit grows, the more accumulated nutrients, the more fragrant the fruit, so it should be timely harvested. Source: New Rural News
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