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Peach Trees Avoiding Harmful Harm and Stabilizing Techniques
The Guizhou plateau is a normal area where the spring cold is endangered, and the time when the spring cold occurs, that is, from mid-March to early April, is the time when most of the peach varieties in flowering and pollination occur. Therefore, due to the low temperature, the peach pollination and fertilization often lead to poor yields. decline. After three years of experiments, the author took certain management measures for the peach tree during the result period to ensure its output and even increase production. It is better to fertilize and fertilize. It is better to apply it in the fall. Take 30 kg of strains as an example, apply 30-40 kg of organic fertilizer and apply 1.5-2 kg of compound fertilizer. This period of soil temperature is to meet the temperature requirements of organic fertilizer fermentation, so as to meet the tree nutrient requirements in the spring and summer of the following year. Water management starts from the beginning of spring in March, and the local meteorological information is kept under control. If spring and cold weather occurs in the next few days, immediate measures will be taken, mainly to increase Taoyuan space and soil temperature, lower tree temperature and delay flowering time. Cold weather damage. Pruning method 1, dormancy pruning: The first year of dormancy period is mainly light pruning, that is, mainly to eliminate pests and weak branches, and also to eliminate the erect branches on the back of the leggy. In this period, all long fruiting branches (30-70 cm) and middle fruiting branches (10-30 cm) are mainly preserved without any treatment. Short fruiting branches are left in light and well-ventilated locations to be partially retained. 2. Pruning during the growth period: 1 week after the flowering of the tree, the entire line is trimmed in time after the invasion of the spring cold. The long fruiting branches were picked in time and the shoots of the lateral shoots were timely applied. The middle fruiting branches temporarily extended their extension branches and retained one third of the lateral branches with good spatial position. From early May to mid-June, the long fruiting branches are again picked up and the extension of the branches is controlled to ensure adequate supply of fruit nutrients. The first fruit picking is carried out for the middle fruit branches as a preparation for the next year's long fruit branches. This is done 2 - 3 times of processing. Immediately remove the back support on each main branch. Only one-third of the number of branches were reserved for the development of lateral branches on each medium-sized and long fruit branch, and the growth was controlled at a length of 30-50 cm. At the same time take support, pull, hanging and other methods to open the side branch angle. Avoid purposeful collaterals that are either too long or weak due to excessive erection or poor lighting. Maintain the golden state of the tree. Results Analysis Taoyuan, which was managed by this method, was still guaranteed production in case of cold weather. The main mechanism is that there is a difference in flowering and flowering time on the same branch. It takes 10-36 hours from the base to the top of the long fruit branch to fully open and pollinate. The middle fruit branch from the base to the top is completely open to pollination in 5-15 hours. The cold and cold temperatures generally last 12 hours. During this period, although some flower pollinations are affected, other buds will be delayed in opening and pollination. Therefore, the flowers on most of the nodes smoothly avoided this period of time. And because all the long-term fruit sticks are temporarily retained during the dormant period. Observed and contrasted, the cold winter year. There are still four-fifths of normal fruiting in the long fruiting branches, and two-thirds of the normal fruiting branches still bear fruit. Therefore, the output has not been lost. Moreover, in the absence of a cold year, using this method, as long as the tree nutrients are sufficient, and the spring pruning is timely, the yield will be significantly improved.
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