First, the control measures of lemon trees
If you want to control scale insects, you should actually make up your mind and pay attention to details. Controlling them is very simple.
1, once found, deal with it immediately to avoid the situation expanding.
2. If scale insects are controlled, they must be used together with additives. If the water consumption is 0.5-2 times of the usual amount of 65438+, it must be sprayed twice continuously, with an interval of about 7 days, and then checked frequently. If it recurs, they should continue spraying.
Second, the cultivation and maintenance of lemon trees
1, temperature
Lemon trees are afraid of cold, the optimum growth temperature is between 18 and 28 degrees, and it is best to put them indoors in winter. The drought tolerance of lemon trees is not high. When the temperature is close to zero, the leaves will fall, and the short-term low temperature will not cause the lemon tree to die. In order to avoid frostbite when entering indoor maintenance.
Step 2 apply fertilizer
If the lemon tree is fertilized, a layer of slow-release fertilizer can be applied about two months, and a layer of ferrous sulfate can be applied about half a month. The fertilizer efficiency of general slow-release fertilizer can last for two months. Because lemon trees like slightly acidic soil, iron deficiency is easy to cause yellowing of leaves, and regular supplementation of trace element fertilizers in bird's nest can effectively prevent it.
3. Disease
The common diseases of lemon trees are anthracnose, gummosis, brown spot and tetranychus urticae. Generally, carbendazim can be sprayed with avermectin. In the process of planting and maintenance, if good ventilation is maintained, the occurrence of diseases will generally be reduced.