In autumn, due to the gradual decline in autumn temperatures, water transpiration is relatively reduced, the soil moisture content is relatively stable. But autumn is also one of the important seasons of nursery management. If the cold, pest and disease prevention work well, will play a multiplier effect on the growth of seedlings next year. In view of the climatic characteristics of autumn, we summarized the matters needing attention in the cultivation and conservation of the seedlings in the autumn, and now they are arranged as follows: timely irrigation: the method of taking more time and less in the period of fast growing seedlings. Each irrigation should be filled with irrigation, irrigation, to prevent erosion of seedlings, seedling stems and seedlings. Each fertilizer should be watered immediately, if the days of rainfall, soil moisture better, do not water. In the late growth period, should be appropriate to control watering (in addition to special drought, generally do not need irrigation). If the seedlings are not out of the nursery before winter, we must put a good winter water. Clear weeds: most of the nursery beds covered with plastic film, generally do not have to cultivate, remove weeds can be. When pulling out the weeds, the operation should be careful, do not hurt the seedlings. If the use of herbicides to destroy grass to be tested in order to avoid injury. The ridge and the two sides, to hoe moisture once in each rainfall or irrigation, while removing weeds. The plastic film mulching cultivation, can loosen the soil and reduce evaporation, play the role of soil moisture and drought. Usually after a timely rain or watering weeding. The cultivation should be deepened step by step, but do not hurt the seedlings, do not press seedlings. In order to control the less lateral roots of the cutting seedlings of broad leaved trees, it is necessary to control the buds in time. Waterlogging: autumn rain, once the seedlings subjected to waterlogging stress or water more, it will cause the whole trees with higher water content, once by low temperature freezing, the tree will freeze expansion, resulting in the death of bark cracking. So dig a drain. In addition to special drought, generally do not need to irrigate in the autumn of scientific fertilization: in the autumn to farm manure and compound fertilizer based, no or less nitrogen fertilizer. Topdressing in the growth of seedlings, coniferous tree seedlings in the top 30 days before the cessation of nitrogen fertilizer. Such as excessive nitrogen fertilizer application, it will cause the seedlings in autumn branches long, low degree of lignification, cold resistance decreased.
in autumn, the autumn water temperature gradually decreased, the transpiration rate was relatively reduced, and the soil moisture content was relatively stable. But autumn is also one of the important seasons of nursery management. If the cold, pest and disease prevention work well, will play a multiplier effect on the growth of seedlings next year. In view of the climatic characteristics of autumn, we summarized the matters needing attention in the cultivation and conservation of the seedlings in the autumn, and now they are arranged as follows: timely irrigation: the method of taking more time and less in the period of fast growing seedlings. Each irrigation should be filled with irrigation, irrigation, to prevent erosion of seedlings, seedling stems and seedlings. Each fertilizer should be watered immediately, if the days of rainfall, soil moisture better, do not water. In the late growth period, should be appropriate to control watering (in addition to special drought, generally do not need irrigation). If the seedlings are not out of the nursery before winter, we must put a good winter water. Clear weeds: most of the nursery beds covered with plastic film, generally do not have to cultivate, remove weeds can be. When pulling out the weeds, the operation should be careful, do not hurt the seedlings. If the use of herbicides to destroy grass to be tested in order to avoid injury. The ridge and the two sides, to hoe moisture once in each rainfall or irrigation, while removing weeds. The plastic film mulching cultivation, can loosen the soil and reduce evaporation, play the role of soil moisture and drought. Usually after a timely rain or watering weeding. The cultivation should be deepened step by step, but do not hurt the seedlings, do not press seedlings. In order to control the less lateral roots of the cutting seedlings of broad leaved trees, it is necessary to control the buds in time. Waterlogging: autumn rain, once the seedlings subjected to waterlogging stress or water more, it will cause the whole trees with higher water content, once by low temperature freezing, the tree will freeze expansion, resulting in the death of bark cracking. So dig a drain. In addition to special drought, generally do not need to irrigate in the autumn of scientific fertilization: in the autumn to farm manure and compound fertilizer based, no or less nitrogen fertilizer. Topdressing in the growth of seedlings, coniferous tree seedlings in the top 30 days before the cessation of nitrogen fertilizer. Such as excessive nitrogen fertilizer application, it will cause the seedlings in autumn branches long, low degree of lignification, cold resistance decreased.
