Management Technology of Nursery in Autumn
Time flies, fall is approaching. I hope this article can give good advice for nursery managers.
One, the amount of fertilization.
There are usually two ways of top dressing. ① underground top dressing: generally, topdressing urea and other quick-acting fertilizer. Ditch between the lines, the fertilizer applied to the ditch, and then cover the soil. Fertilizers can also be diluted, evenly spray on the seedbed (ridge, furrow), and then rinse with water. Commonly, the amount of urea should be 15 to 20 kg, the times should be 2 to 3, dressing again after 15 days. ② dressing outside the root: at fall, spraying 0.2% urea and 0.3% potassium dihydrogen phosphate solution on plant.
Two, timely watering.
The watering of seedling during its fast-growing time should be large
quality and less time. Every time when we have an irrigation, we should make the water filling and can not damage seedlings stem and root. Each time, the top dressing should be immediate. if there is raining, moisture is better, we do not need to water. In the late growth period of nursery stock, we should properly control the watering.
Three, drainage and flood control.
The rain in autumn is more, the seedlings were flooded will have a influence on nursery trees. Therefore, about the nursery drainage facilities, we should have timely inspection, to dig a good ditch, early detect and drain the water.
Four, cultivated weeding.
Most of the nursery furrows covered with plastic film, generally do not have to cultivate, just need to remove the weeds. Remove the weeds within the width, the operation should be meticulous, do not wound seedlings. If you want to use the herbicide, you should have a test first so as to avoid phytotoxicity. Ridge ridge and on both sides, every time after the rain or watering, people should hoe hoarding moisture once and remove the weeds. For plant have no cover film, the cultivation can loose soil, reduce evaporation, play a role in drought and moisture. Usually every time after the rain or watering, people should cultivate weeding in time. Cultivation should be deepen, but do not hurt seedlings, do not pressure seedlings.
Five, the prevention and treatment of disease.
High temperature and humidity weather easily lead to pests and diseases growth. According to the growth and pathological conditions of seedlings, people should prevent and timely control the possible occurrence of pests and diseases. Autumn seedlings topping, you can spray 1: 0.7: 200 Bordeaux liquid one time. If the downy mildew occurred, spray 78% Cobo 600 or 80% aluminum phosphorus 300 ~ 500 one time. Autumn, the leaves have been aging, the new shoots are basically stopped growing, this time to spray 1: 1: 180 or 1: 1.5: 80 Bordeaux liquid-based one time.
Six, control pests.
Improve the light utilization rate of nursery stock 
and promote the growth and development of seedling root system, which can effectively enhance the prevention ability of insecticide and insect pests. In the pest season, spray fungicide and other medicine to control pests. Usually we can choose dichlorvos 1 1000 ~ 1500 or Long Wei 1 1000 ~ 1500 liquid and so on. The best spray time is 4 pm.
Seven, out of the garden scientifically.
After the seedlings fall leaves, it should not immediately out of garden because its the time to store nutrition. In the early autumn and early winter, we should investigate the nursery stock, check the species, variety and quantity of the nursery stock, prepare the packaging materials and transportation tools, and determine the place of temporary planting and wintering. In general, the appropriate time to out of the garden is before and after the “snow”.