The rot of the current season includes the vegetation of poplar, willow national spirit and other vegetation. It is a parasitic bacteria that easily causes vegetation to fail, and timely selects pesticides and understands the rational habits of decaying living habits.
The pathogens mainly overwinter in the tissues of the diseased parts with ascospores, mycelium or conidia. In the spring of the next year, the average temperature is between 10 and 15 °C, and the relative humidity is between 60 and 85%. The ascospores of the ascospores are spread by the wind and rain, invading from the wounds, and starting to develop. The period from April to early June is the peak period, and the disease after July. Gradually, the recurrence in autumn.
Control measures: prevention and control of cultivation and maintenance techniques, strengthening management of fertilizer, water and soil, enhancing tree potential, avoiding mechanical damage, and preventing premature frostbite and insect pests .
(1) In the winter or early spring, the trunk is painted white (5kg of quicklime, 1.5kg of sulfur powder, 2kg of salt, 36kg of water) or spray 5 waves of stone sulfur mixture onto the main branch of the trunk.
(2) It can be used to control the rot disease, which can be used for foliar spray or infusion or bottle insertion. Specific usage: It can be diluted 1000--1500 times foliar spray. When using infusion or bottle insertion, when the diameter of the tree is greater than 15 cm, use 3-5 ml of each tree per tree, add appropriate amount of water (not less than 500). ) Perform tree infusion.
(3) The plants that are seriously susceptible to disease should be thoroughly removed in time to reduce the source of infection.
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