How to maintain the broom bonsai?

The bonsai of Bromus stumps can be pruned all the year round, and the long branches and over-dense branches that hinder the modeling can be cut off at any time, so that the stumps can maintain beautiful modeling, the spacing between branches and leaves is appropriate, and the ventilation is transparent, thus reducing the occurrence of pests and diseases;

Fertilization: cake fertilizer and kitchen waste can be put into the jar for sealed fermentation, then the upper layer of fertilizer water is diluted and watered for 4-5 times. Bromus is an acidophilic plant, so 1% ferrous sulfate should be added to the fermented fertilizer water for application. When brome germinates, spray urea with the concentration of 0. 1 ~ 2 times; Spraying 1 0. 1% ~ 0.2% potassium dihydrogen phosphate before and after flowering;

Be careful not to let the basin soil get too wet or too dry when watering. Watering in the morning and evening in rainy days 1 time. In order to shorten the branches and leaves and make the shape more beautiful, water can be properly controlled in spring and summer;

The pot turning times of 3-4-year-old Bromus are 65,438+0 times, and it is best to turn the pot before germination in spring. When turning the pot, cut off some old roots and roots that are too long and too dense, replace 1/2 old soil, cultivate fertile and loose culture soil, and promote the growth and development of new roots.

Shading: The bonsai of Bromus parviflora has less soil and shallow roots, with buds, branches and leaves. Exposure to the hot sun can easily lead to sunburn or death. Therefore, it is necessary to shade the sun in summer, build a shade shed or put it indoors, under the eaves, in the shade and other places where there is no direct sunlight;

Bonsai of Bromus fragrans has poor cold tolerance and is easy to freeze and even die. Therefore, it should be placed indoors in winter, and attention should be paid to ventilation, and the room temperature should be kept above 5 C; When the room temperature exceeds 25℃, you can open the window to avoid excessive growth caused by high temperature; When the room temperature is lower than 5℃, plastic insulation can be used (plastic bags can be removed when the greenhouse is higher than 5℃), and when the room temperature is lower than 0℃, hot water and other heating methods should be used to ensure the safe wintering of pineapple bonsai;

Bromus bonsai is prone to pests and diseases. The main pests are: tea leaf roller, which can spray 35% phosphorus emulsion 2000 times; The mixture of stone and sulfur can kill longicorn; Scale insects can be removed by manual scrubbing.