First, the growth characteristics of fruit tree roots Root growth has one or more peaks in a year, and peaks appear to alternate with peak growth peaks. More than 50% of the photosynthetic products of fruit trees are used for root growth, and organic nutrition is insufficient, which is not conducive to the growth of roots. Flowering fruit and fruit growth and consumption are large, and the above-ground nutrient growth is strong, which is not conducive to root growth. Second, how long is the root system all year round? The roots of the fruit trees begin to move earlier than the ground and stop late. In the northern fruit growing area, the roots of mature trees have three peak growth periods within one year. 1. The first growth peak. When the soil temperature in spring reaches 3~4 °C, the roots begin to grow. Generally, it is the first growth peak from pre-emergence to late April, and is mainly restricted by ground temperature and storage nutrients. This peak has more hair roots, but the growth time is shorter. 2. The second growth peak. From the beginning of the new shoot to stop growing, until the accelerated growth of the fruit and flower bud differentiation (the end of June to the beginning of July), the second growth peak appeared. 3. The third growth peak. From early September to late November. The peak lasted for a long time, but the growth was weak. This period is the best time to apply the base fertilizer, and the sooner the absorption is generally better. Third, the root system is a long time The tree after the initial fruiting period is dominated by horizontal roots, while vertical roots and oblique roots are produced on the horizontal backbone roots. In the fruiting period, the roots occupy the largest space. At this time, the root hair growth rate also reaches the maximum. Measures should be taken to improve the soil and ensure that the root system has a suitable development environment. Fourth, how can we promote the healthy growth of roots? 1, spring adjustment. After the spring, the temperature rises and the roots begin to move. With the rapid growth of flowering fruit and new shoots, the nutrient consumption center is mainly in the upper part of the earth, and the root growth is relatively slow. The nutrients needed for root growth in spring are mainly storage nutrients. (1) Irrigation. Spring irrigation should end before germination. If the water is re-irrigated at the time of germination, the ground temperature will drop rapidly, affecting the normal activity of the root system. At this time, the leaves have not been unfolded, and the nutrition is provided by its own storage and root system. If the root system cannot move normally, it will affect the leaf area and leaf thickness. Do not pour large water when filling, because the soil is not enough gas after pouring large water, the root system can not carry out normal breathing activities, affecting the supply of ground material and its own growth. (2) Coverage. Whether it is mulching or straw mulching, the temperature difference of the soil is reduced, providing a suitable environment for root activities. (3) Re-cut before flowering. The pre-flowering re-cutting seems to be the management of the tree, but it is also the management of the root system. Since the reduction of flowering reduces the amount of flowering, it also reduces the consumption of storage nutrients for flowering, and the relative increase of nutrients for root development is an effective regulation of root growth in spring. 2, autumn guarantee. It is to ensure that the roots can grow and store nutrients normally in the fall. At this point, the tree began to stop, the fruit was close to maturity, and the photosynthesis of the leaves reached a peak. Whether the fruit tree can grow normally or not depends mainly on whether the root system has a good ecological environment. For the time being, many orchards have soil compaction and roots are unable to move normally, resulting in poor tree development. In particular, some black clay orchards, perennial application of chemical fertilizers do not apply soil and fertilizer, which intensifies the degree of soil compaction; there are still many orchard owners who rarely turn the orchards to loosen the soil, mistakenly believe that turning the ground will hurt the roots, year after year, The soil is getting more and more knotted. Here, it is advocated to fertilize and strengthen the deep under the tree, intentionally breaking off part of the root system, promoting the induction of new roots and strengthening the root function. Disclaimer: Some articles on this website are transferred from the Internet. If legal rights of third parties are involved, please inform this website. phone Sofa Sets Guangdong Widinlsa International Co.Ltd , https://www.gdwidinlsa.com