In the fall of autumn, as the temperature in autumn gradually decreases, the water transpiration also decreases, and the moisture content in the soil is relatively stable. However, autumn is also one of the important seasons for the conservation and management of Osmanthus seedlings. If the cold and pest prevention work is done well, it will have a multiplier effect on the growth of seedlings next year. In response to the climatic characteristics of autumn, we have summarized the issues that should be noted in the cultivation and maintenance of nursery stocks in the fall. We will now organize them as follows: 1, timely irrigation: Dan Gui seedlings in the fast growing period of watering to take a number of times less than the method. Each irrigation should be thoroughly irrigated and well-distributed to prevent scouring the seedlings and damaging the shoots and roots. Every time you top-dress fertilizer, you should water it. If it rains day and it is better, don't water it. In the late growth period of Dangui seedlings, watering should be properly controlled (except for special drought, irrigation is generally not required). If the nursery stock does not come out of the garden before winter, it must be poured over the winter water. 2. Removal of weeds: Most of the osmanthus nursery gardens are covered with mulch. Generally, cultivators are not needed for cultivating and removing weeds. When weeding the weeds in the plot, the operation must be careful not to hurt the seedlings. If herbicides are used, we must first test to prevent phytotoxicity. On both sides and on both sides, we must ensure that weeds are removed once after each rainfall or watering, and weeds are removed at the same time. For those who do not cover the mulch, the cultivator can loosen the soil, reduce evaporation, and play a role in drought resistance. The cultivating and weeding are usually done in time after each rainfall or watering. The cultivator should be gradually deepened, but do not hurt the Dangui seedlings and don't press the Dangui seedlings. For cutting seedlings of broad-leaved trees, it is necessary to control their fewer lateral roots, and timely pick and shoot. 3, flood control: more rain in autumn, once the seedlings suffer more water or moisture, it will cause the overall moisture content of the tree is greater, once the low temperature freezes, Dan Osmium tree will swell, causing bark cracking death . Therefore, dig out the drainage ditch. In addition to being particularly dry, irrigation is generally not required in the autumn. 4. Scientific top dressing: In the fall, the farmer's manure and compound fertilizer are the main factors, and no or less nitrogen fertilizer is applied. The topdressing was carried out during the growth of Dangui seedlings, and topdressing N fertilizer was stopped 30 days before the top of the top of the coniferous Dangui seedlings. If excessive nitrogen fertilizer is applied, the seedlings will be prosperous in autumn branches, the degree of lignification is low, and the ability to resist coldness will decline. 5, control the lateral root: the broadleaf cutting seedlings, to control their less lateral roots, their timely picking buds, in addition to earthworms. 6. Disease prevention and pest control: Dangui nursery should make predictions and forecast work for pests and diseases, prevent potential pests and diseases, and timely prevent and treat pests and diseases that have occurred. It can be sprayed with 500-600 times dilution with high concentration strong clearing agent. High-temperature and high-humidity weather can easily lead to the breeding of diseases and insect pests. According to the growth and pathological conditions of the seedlings of Dangui, the pests and diseases that may occur can be prevented, and pests and diseases that have already occurred should be promptly prevented and prevented. 7, Tu Bai: Whitening agent with white coating on the branches of white, can reduce the seedling sunny side due to large temperature difference between day and night and frozen, but also can kill some of the overwintering pests and diseases. 8. Wind barriers: In order to reduce the damage caused by cold and dry winds to the Osmanthus trees, wind barriers can be erected in the windward direction of the trees. Wind barrier materials are often corn stalks or reeds, which are bundled and fenced and their height exceeds the height of the tree. In addition, the wind barrier should also be supported by sticks, bamboo sticks, etc. to prevent the wind from falling down. 9, wrapped in straw: trees that are not tolerant to cold, use grass ropes to dry directly around the trunk or wrap straw around the trunk and some of the main branches, and let the trees wear “padded clothes†before winter arrives. 10, wrapped in plastic film: After wrapping the grass rope, early winter season, wrapped in a layer of white plastic film above the rope to prevent the winter too low temperature hazards. 11. Elimination of diseased leaves and branches and branches: For the early leaves that are caused by illness, the nursery should be thoroughly cleaned out, and the insects on the branches should be cut off and then destroyed centrally. 12. Treat bark: Scrape off old oak skin, diseased skin, insect skin, etc. at trunk, branch and branches of osmanthus fragrans, concentrate burning or deep burying, and eliminate overwintering pests in rough skin. The depth of scraping skin is suitable for yellowish-green skin. Apply wound healing cream, neocain, fungicides, 40% methine wettable powder 50 to 100 times liquid, or 5 to 10 bumeide lime sulfur. To protect the wound. 13, spraying prevention: Pucheng Osmanthus trees before falling leaves, spraying eucalyptus forest antifreeze 3 to 5 times, after the deciduous spray 5 Baume degrees of lime sulfur plus 200 times sodium pentachlorophenol, to improve the freezing resistance of seedlings And eliminate the wintering germs and eggs significantly. Pumpkin Seed Kernels,Pumpkin Seeds Kernels Roasted,Shine Skin Pumpkin Seed Kernels,Pumpkin Seeds Or Kernels Wuyuan county dafeng oil food co.,ltd , https://www.sundafengfoods.com
Dangui green seedlings autumn maintenance