Buried in the cold: A 1 year to 2 year old sapling that cannot be safely overwintered on the exposed land. The entire tree body is bent to one side and covered with soil. This method is the most effective and reliable measure to prevent pumping.
Cultivate soil to prevent cold: In the base of seedlings, cultivate a mound within 30 cm to prevent frostbite and grafting. After the spring temperature has risen and stabilized in the spring of next year, it will be removed and the tree plate will be leveled.
Whitening and protecting against cold: The sapling whitening can relieve the temperature difference between the yin and yang surface of the trunk. The cold-proof effect is better. It can be applied before the soil is frozen. The formulation of the whitening agent is: salt 0.5 kg, quicklime 6 kg, clean water 15 kg, and then add the appropriate amount of adhesive and lime sulfur residue coated over the young branches.
Polyvinyl alcohol coating: dry the seedlings evenly with polyvinyl alcohol. The tanning method is generally performed at a ratio of "polyvinyl alcohol:water=1:15 to 20". Heat the water to about 50°C, then add polyvinyl alcohol (cannot wait for the water to boil and then add, otherwise the polyvinyl alcohol can not be completely dissolved, the solution is not uniform), with stirring and stirring, until boiling, and then use slow fire After 20 minutes to 30 minutes, wait for the temperature to drop until it is hot.
Barrier Mesh,Plastic Fence Mesh,Insect Barrier Netting,Agfabric Insect Netting
Changzhou Satidi Import and Export Co., Ltd. , https://www.guanjiejts.com