Pricking on the back of the leaf will lead to wilting of the bulb, and at the same time cause coal pollution. The bulb is no longer crystal clear, which directly affects the ornamental value of the plant.
Strengthen ventilation and reduce air humidity.
At the initial stage, it can be killed by spraying with 1000-2000 times of 40% oxidized dimethoate emulsion, or 500 times of marathon or 1000 times of dimethoate mixed with dichlorvos. After spraying for 2 days, the dead insects and black powder can be washed away by strong water flow.
(Note: whitefly is resistant to insecticides and is difficult to kill. Spray continuously and change frequently.)
SAP sucking, leading to poor growth of plants, severe wilting and death. A lot of white floccules appear at the top of the bulb, and later appear in pieces.
When the quantity is small, brush and toothpick can be used.
It can also be used for quick killing (both jiebizhi and huhuashen) diluent spraying (use powder with caution), root filling and root washing.
75% alcohol was used to brush the concentrated part of the scale insects for many times.
Like humus food, usually in the meat next to fly around, eating liquid meat, so that its wound infection disease.
The adult little black fly likes to be wet and afraid of being dry. It keeps the soil relatively dry in the meat and does not create a habitat for adults.
During maintenance, pay attention to ventilation and keep the surface of basin soil clean. Do not put everything into the basin as fertilizer. Scientific fertilization is the right way.
Lay a layer of vermiculite or river sand on the surface of the basin soil. Do not expose the humus outside.
