Nursery knowledge of winter seedling maintenance - Fertilizer before winter should be mainly farmyard manure and compound fertilizer, do not apply or less nitrogen fertilizer. If the nitrogen fertilizer is applied excessively, the seedling branches will be prosperous, the degree of lignification will be low, and the cold resistance will be reduced. Fertilizer should be applied to the lateral roots of seedlings.
White trunk
Grasp the sunny weather with lime plus lime sulfur on the branches of white, you can reduce the seedlings sunny side due to the large temperature difference between day and night and suffered damage, but also can kill overwintering bacteria and eggs, kill more.
Main trunk "clothing"
For seedlings that are not tolerant to cold, use a straw rope to wrap dry or use straw to wrap the trunk and some of the main branches, so that the seedlings wear “cotton coats†before winter arrives to prevent freezing damage.
Scratch coating
Early winter, as soon as possible, the diseased skin, insect fleas, etc. at the branches and branches of the seedlings are scraped off and burned or buried deeply to eliminate the pathogenic bacteria and eggs that overwinter in the bark. Depth of skin scraping is preferably yellowish-green on the skin. Apply 40% of Formamide WP to 50-100 times or 5 to 10 Baume Degree Lithosulfide to protect wounds.
Set the wind
In order to resist and reduce the damage that may be caused to the nursery stock by cold and dry winds, a windbreak wall should be erected in the windward direction of the nursery before winter. The height of the windbreak exceeds the height of the tree. In addition, the wind wall should be fixed with wooden sticks, bamboo poles, etc. to prevent it from being blown by strong winds.
Water control antifreeze
After entering the winter, it is necessary to strictly control the water. In addition to the special drought, it is generally not necessary to water. Because if the water content of the tree is too large, once the low temperature is encountered, the tree will swell and swell, causing cracking of the bark and death of the seedlings.
Spraying
After the seedlings fall off, 5 Baumidedu lime sulfur plus 200 times of sodium pentachlorophenol is sprayed to eliminate overwintering germs and eggs.
Winter
jacket is kind of Work Jacket which used in winter cold environment.
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Interlayer padded with cotton for keep body warm.
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