In the late spring and early summer, when it is warm and rainy, it is often seen in some poorly ventilated orchards that the trunks, leaves, and even the ground are covered with a layer of “green shahaâ€â€”moss.
Classification of Moss: Moss is divided into two categories, one is moss, and the other is Chlorella vulgaris. Moss is a type of algae commonly found in citrus groves. A false root is attached to the stem to absorb the water and nutrients in the host. The surface of the organ is initially affixed with a layer of green villous, lumpy, or irregular epidermal parasites, which gradually expands and eventually surrounds the entire trunk and branches or covers the entire leaf. The epiphytic chlorella is attached to the trunk, branches, and old leaves in the lower part of the canopy. When it occurs seriously, it can spread to the upper middle leaves and densely grow a layer of grassy green algae on the leaves.
Moss damage: Moss needs adequate water and fertilizer supply in the breeding process. Parasites on the stems of fruit trees can absorb nutrients in the branches. Covering on the leaves will seriously affect the photosynthesis of the leaves, covering the fruit and affecting the quality of the fruit. Exterior. Coverage on the ground to seize fertilizer and block the infiltration of water, affect the exchange of gas in the soil.
The regularity and conditions of the occurrence of moss: The vegetative body is mainly overwintered on the stem of the host, and the wet and warm environment is conducive to propagation and propagation. Excessive management of orange trees, aging trees, debilitating trees, poor ventilation, and damp and damp environments are all conducive to the occurrence of moss.
Moss prevention measures: (1) Ditch drainage to prevent orchard accumulation of water (2) The pruning of spring, summer, and autumn shoots is reasonable, and the orchard is kept well ventilated and breathable. 3 Use less nitrogen-phosphorus-potassium water-soluble foliar fertilizer, so that the moss does not get enough water and fertilizer 4 trunk white, reduce the occurrence of moss and can prevent the flow of gum disease, anthrax and other diseases. 5 After picking the fruit, the clear garden can be replaced with 250-fold solution of Daisen ammonium and 15 parts of ammonium nitrate and 150 times of oil-sprayed cloth.
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