Key points of spring management techniques for jujube trees
The management of jujube trees before germination in spring is crucial for the management of the year. The main management measures during this period are: artificial clearing and drug clearing.
1. Artificial clearing gardens Artificial clearing gardens include measures such as scraping bark, cleaning up pests and diseases, and cleaning litter. These measures can reduce some of the pathogens and pests in the garden during the winter. Among them, bark scraping is an important task. The main pests and diseases controlled by bark are jujube red spider, nailworm, jujube turtle wax, jujube meal, red-rimmed beetle, ring disease and anthracnose. And other diseases. At the same time, scraping the bark can also promote the metabolism of the tree, which is conducive to the normal development of the jujube. The time to scrape the bark is better when the spring temperature starts to rise. It is usually best from the end of February to the beginning of March.
When scraping the bark, the main skin and the rough skin and the skin on the main branch are scraped off. The scraping is too light to function. The scraping is too heavy to easily affect and destroy the xylem and the formation of the tree. It is advisable to use whitening, and it is important to bring all the scraped skins out of the garden or to destroy them centrally.
Second, the drug clearing garden before the farmers of the farmers, the drug clearing garden mainly uses stone sulfur mixture, the main role of stone sulfur mixture is to kill and kill the winter eggs, the purpose of jujube clearing garden is more to prevent stem diseases, and The mites on jujube trees are mainly Trunformis lobata. The wintering eggs of T. serrata begin to hatch at the end of February. When the jujubes sprout, the red spiders have been bred on the ground for 2-4 generations. They are all on the ground weeds, so the effect of the sulphur sulphur mixture before the germination of jujube trees is not good.
According to the occurrence characteristics of jujube pests and diseases in the past few years, the most ideal method for clearing the garden is to carry out the drug clearing work when the jujube tree is nearing the germination. The drug should use 77% of the tonic (copper sulfate calcium) wettable powder 400 times solution. Add 19% of Kwant's (Cyanocyanoquinone) suspension to 2000 times to eradicate the overwintering bacteria and wintering pests of the tree.
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