Winter longan routine management
1, young trees, water, cover moisturizing and cold work. In winter, the weather is dry. The saplings are superficial to their roots and their stress resistance is weak. They need to be kept wet with regular watering. In addition, weeds or other materials must be used to cover the tree trays to reduce the evaporation of soil moisture, keep the tree trays moist and reduce the amount of leaching. Water frequency, and can keep the roots from freezing cold. When the tree plate is covered, it must have a certain thickness (15 cm or more) to function. If there is too little covering, the effect is poor. In areas with low winter temperatures, special attention should be paid to the cold protection of the young trees, and straw can be used to tie the trunk. Keep cold. 2, Qingyuan. Winter is the best time to clean the orchard. The litter and weeds in the orchard can be transported outside the orchard and burned. At the same time, the trunk is brushed with lime water, which can effectively reduce the source of overwintering diseases and pests, and at the same time Weeds can be used to green or cover trees. 3. Strengthen the basic construction of orchards. The orchards in the mountains shall be widened year by year to repair and reinforce the terraces damaged by rainwater, and to improve the ability of soil and water conservation in the orchards; and the irrigation and drainage systems in the orchards (including irrigation and drainage channels, reservoirs, water pipes, etc.) shall be renovated. Renovate roads and other orchard infrastructure. 4, deep turning to improve soil, increase organic fertilizer. Deep-turning soils are generally carried out from mid-December to January, and the materials for the improvement of soil materials can be used locally to make full use of the topsoil and weeds in the orchards. If you purchase soil-refining materials outside the orchard, you should pay attention to different types of soil orchards and choose different soil-refining materials: if loose soil, loose soil and strong water retention and fertility, choose high-quality organic fertilizer with high fertilizer efficiency ( Such as chicken manure, pig dung, etc.), the amount can be relatively less; for soil more viscous orchard, soil addition to increase the organic matter, but also loosen the soil, improve the permeability of the soil, the material can choose high-quality organic fertilizer plus Weeds, green manures, or loose soil substrates such as crop stalks and garbage; for heavy sandy soils, soil improvement is mainly to improve its ability to retain water and fertility. The material can be selected from high-quality, high-quality organic fertilizers, pond mud, or garbage. Deep-turning and soil-specific operation methods: Generally, two symmetric points for soil fertilization are dug under the canopy drip line. Take a tree with a canopy diameter of 5 meters as an example. In an orchard with poor soil quality, two deep 60 cm deep and 40 wide can be excavated. - 50-centimeter-long, 2-meter-long large hole, applying 100-150 kilograms of soil-improving material; in the better-quality orchard, two shallow ditches deep 40 centimeters wide and 1.5 to 2 meters long can be excavated. - 30 kg chicken manure. The amount of fertilizer should also be determined depending on the amount of fertilizer used to promote autumn shoots. If organic fertilizer has been reapplied in the fall, winter fertilizer can be reduced. The fertilizer should be placed on the bottom of the fat, fertilizer placed on the surface. If there are weeds, green manure or crop stalks, appropriate amount of lime should be added to promote decomposition. China Agricultural Network Editor