Disease of Ganoderma lucidum: Cercospora
DactyliumdendroidesFries belongs to the subphylum Trichoderma, Trichospora, Trichospora, Trichosporaceae, Trichospora.
1. The morphological characteristics of hyphae are white and cotton floc. The conidiophores are slender and sparse, and the whorl branches are arranged radially. The conidia are oblong, colorless, born at the top of the peduncle, solitary or in small clusters, mostly 4 cells.
two。 Morbidity regularity
The main results are as follows: (1) the route of transmission means that Sporomyces lives in the soil, and there are many soils rich in organic matter. When Ganoderma lucidum was cultivated with soil cover, the soil was not disinfected, so it was easy to spread the pathogen.
(2) High temperature, high humidity, lack of ventilation and thick soil cover are the main conditions for the occurrence of the disease.
3. The bacteria appeared white cotton-like hyphae on the surface of the covered soil, and then rapidly expanded to form a layer of white bacteria with a thickness of 1-2 cm, which covered the bed. The injured Ganoderma lucidum stalk was invaded by the slender hyphae, which made the base of the stalk rot like water stain, forming the symptom of yellowish brown or light brown soft rot, which inhibited the normal development of fruiting body.
4. Prevention and cure method
(1) fumigation with 5% formaldehyde solution before covering soil.
(2) the mixture should be used in clean running water or tap water.
(3) at the initial stage of infection, the bacteria can be partially removed by sprinkling lime powder or spraying 2% formaldehyde solution, enhance ventilation and stop water for 1-2 days.
(4) without harming the growth of young Ganoderma lucidum, remove the covered soil of miscellaneous bacteria in time, and re-cover 1-2 cm of burning soil or disinfect treated soil.
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Shaping and pruning techniques of young trees of Lycium barbarum
Lycium barbarum trees are generally young for 4-5 years after planting. At this time, the tree has exuberant growth and strong branching ability. if the branches are heart-picked, they can germinate three or four times a year. The shaping and pruning of young trees is mainly shaping, leaving strong branches to cultivate the crown skeleton, gradually expanding the crown, cultivating branch groups, and increasing fruiting branches. In the selection and cultivation of tree shape, it should be adopted flexibly according to the cultivation conditions and based on the principle of favorable high yield so as to lay the foundation for high yield in the future. Although there are many kinds of Chinese wolfberry trees, the principles of shaping and pruning are basically the same, except that each tree shape
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Ganoderma lucidum disease: verrucous spore brown ground bowl fungus
Alternaria alternata (PezizabadiaPers.) It belongs to the subphylum ascomycetes, Arteriacea, Sphaeroptera, Armillariaceae. 1. Morphological characteristics: ascus bowl-shaped, sessile, dark brown, 3-6 cm wide. The ascus is cylindrical in the upper part, tapering downward into a stalk. The spores are arranged in a single row in the upper part of the ascus, oval, with obvious small sunken process. The side wire is light yellow. two。 The law of disease: (1) the spores are transmitted by air flow and wind, and the disease can also be caused by the introduction of culture material and covered soil. (
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