October citrus science management to do this five points
In October, the management of orchards to reduce soil moisture evaporation, prevention and control of pests and diseases mainly to protect the leaves over the winter, early citrus fruit fertilizer should be increased to stabilize the tree vigor, late-maturing varieties to spray foliar fertilizer to promote fruit coloring and improve sweet degree. Drought Resistance and Drought Reduction to Reduce Soil Moisture Evaporation The management of fertilizer and water is focused on timely drought and drought prevention. Drought prevention should be done first. Navel oranges, tribute oranges, shatangjue, horse oranges, etc. are at the peak of fruit collection and fruit cracking. Before the drought, we must do a good job of covering the trees, keep the soil loose and moist, and reduce the evaporation of soil moisture. When it lasts for two weeks, it will not rain. Timely irrigation is required to meet the requirement for water in the late-maturing varieties to continue to grow. It is the best season for green manure (mung beans, soybeans, field greens, peanut vines, etc.) to deepen and push green in September-October. It can be used in conjunction with heavy fertilizers for digging the ditch to facilitate the regeneration of the root system. . Specific practices: The young citrus garden can open 20-30 kg of green manure, 2.5 kg of N, P, and K compound fertilizers into the ring ditch with a length, width, and depth of 403,080 cm outside the canopy drip line, and then add it to the pig's fat bar or Bran manure and other organic fertilizers, while adding 0.5 kg of lime, mix well with the soil and return to the pit to fill the heavy fertilizer pit, 5 cm above the pit surface. The improved soil in South China Red and Yellow Soil citrus groves has low soil organic matter content. The cultivation of green manure is an effective measure to improve the soil, increase the source of organic matter, and cultivate gardens in order to solve the shortage of manure sources in citrus groves. Juvenile citrus fruit trees can be planted between the October-October winter green manure. Early maturing varieties such as early-maturing early-maturing varieties such as early-maturing mandarin oranges can be used to timely collect fruit fertilizers within half a month after fruit picking at the end of September and early October, and apply organic fertilizers and trace fertilizers to restore tree vigor. Timely prevention and control of pests and diseases From September to October, the weather in southern China was dry and the temperature was still high. It was the most endangered stage of citrus aphid (Red spider, rust spider). Therefore, it is not possible to relax the prevention and treatment of cockroaches. At this time, it is necessary to inspect and find that each field of vision has 2 to 3 sprays. Citrus asters can be satisfactorily controlled with oranges. Http:// Youth Biotech CO,. Ltd. , https://www.youtherb.com