How to manage nectarines in summer?

How to manage nectarines in summer? Please give guidance to summer nectarines can refer to the following methods for management: first, control shoot growth, prevent orchard canopy closing nectarine branching ability, easy to produce secondary branches or even tertiary branches, coupled with nectarine tree potential, especially the unfruitful growth. The increase of the number of branches often leads to the deterioration of light in the garden, the outward movement of fruit coloring and the decrease of yield. Therefore, attention should be paid to control in production, and the main control measures are as follows: (1) to strengthen the control of fertilizer and water. Especially for the control of nitrogen fertilizer, do not apply too much nitrogen in the early growth stage and after fruit harvest each year, so as to prevent the shoot from growing. (2) the application of dwarf auxin control. Applying 5 g / plant paclobutrazol or spraying (200-300) X10-615% paclobutrazol in the annular ditch under the new shoot growth period has a better control effect. (3) sprout should be wiped in time. The useless secondary / tertiary branches and buds on the back should be erased in time. If the branches are not removed in time, the branches should be thinned in time to keep the crown permeability good. (4) keep the uniaxial extension of the branch group and reduce the branch grade. Second, strengthen flower thinning and fruit thinning to increase the number of fruits due to the high fruit setting rate of nectarines. If the fruit can not keep up with the fruit thinning, it will lead to smaller fruit and affect the commerciality of the fruit. Therefore, in production, we should strictly thinning flowers and fruits, according to the growth strength of fruiting branches, timely thinning flowers and fruits in the early flowering period, leaving 6 flowers for each strong branch, 3 fruits for each strong branch, 4 flowers for the middle branch, 2 flowers for the middle branch, 2 flowers for the short branch and bouquet-like branches, and single fruit, so as to ensure that the fruit remains about 120 per square meter, so as to fully expand the fruit and improve the commerciality of the fruit. Third, starting from improving the light of the tree, through the regulation of the number of branches, the fruit coloring can be promoted because the nectarine tree is prosperous, it can be divided into columns many times a year, if it is not controlled effectively, it is easy to lead to poor fruit coloring, especially the poor coloring of the inner chamber of the crown and the lower part of the crown. Therefore, measures should be taken to promote coloring in production. (1) the "ya" type which is sensitive to light and beneficial to high yield should be selected as the main tree shape; (2) the buds should be wiped and sprouted in time during the budding period, and the secondary and tertiary branches should be cut off in time during the growing period, so as to control the amount of branches and prevent the deterioration of light; (3) at the beginning of fruit coloring, the shading leaves should be removed to make the fruit fully bathed in light; (4) in the fruit coloring period, branch pulling treatment should be carried out to increase the amount of light in the crown chamber. (5) laying reflective film underground to improve the utilization of reflected light. Fourth, strictly prevent fruit rust, keep fruit surface smooth nectarine due to hairless, fruit rust is very easy to infect, fruit rust occurs, commerciality is reduced, affecting the improvement of production efficiency. Therefore, in order to strengthen the prevention and control, we should do the following: (1) strictly control the number of branches, keep the garden unobstructed, reduce the air humidity in the garden and restrain the occurrence of diseases; (2) fruit bagging for fruit protection (3) to carry out chemical protection, in rainy years, when there is a high humidity in the garden, we should promptly use 2000 times of 25% temperatable chlorothalonil powder or 65% temperature-sensitive zinc powder to 500ml 600x solution, and 2% agricultural resistance "120" 200x solution to keep the fruit surface clean and improve the marketability of the fruit. Generally, the above pesticides should be used alternately every 7 days or so to control the harm. Fifth, increasing fruit flavor nectarine production is easy to appear flavor weakening phenomenon, the reason is mainly due to excessive water supply or unreasonable fertilization and early harvest, the ways to increase flavor are as follows: (1) limit water supply. Especially in the fruit expansion period, if not too dry, do not easily irrigate to increase the accumulation of substances in the fruit, increase the flavor of the fruit; (2) increase the material supply, especially the application of organic fertilizer, promote the accumulation of sugar in the fruit, make the fruit more sweet; (3) harvest at the right time. At the beginning of the fruit coloring period, the fruit begins to enter the period of nutrient accumulation. The longer the fruit grows and the more nutrients it accumulates, the sweeter the fruit taste, so it should be harvested in time. Click to get more peach tree planting techniques click to get more fruit planting techniques