Second, pay attention to excessive fertilization when applying fertilizer, because the branches and leaves are too long. If there is no fertilizer, the branches will become thinner and the leaves will turn yellow, which is easy to plant diseases and insect pests. Therefore, there should be principles for fertilization: new planting, new planting pots, new pots, and root damage should not be fertilized within one month. In spring and summer, potted trees must be fertilized in the peak season. After autumn, potted trees should be planted less when they grow slowly. Potted trees can stop fertilizing when they enter dormancy in winter. It is not suitable to fertilize around noon in rainy days or midsummer. It is best to loosen the soil on cloudy days or in the evening when the basin soil is slightly dry, so as to facilitate the infiltration of fertilizer and water into the soil. In order to accelerate the decomposition of fertilizer, water must be sprayed the next morning.
Third, the soil is good. Bromus stumps used to grow in wild areas, with developed roots and drought resistance and waterlogging tolerance. Once they are dug up and planted in shallow pots, their growth conditions are limited. If they are not properly maintained, they are easy to die, so they should be taken care of. To choose flower mud with good drainage, it is best to thicken the basin soil during the curing period. Change the new soil every two years and apply some base fertilizer to protect the fertile soil, so that the pile landscape can grow normally.
Fourth, pruning should be timely, generally in late spring and early autumn pruning is appropriate. In these two seasons, the broom stump has the strongest germination and the most prosperous growth. Long branches, overlapping branches, cross branches, radiating branches, dead branches and pest branches should be cut off at any time. But it should be noted that when the weather is hot, it is easy to burn new buds and roll leaves. Therefore, it is best to put it in the shade after pruning until the germination is normal.
Fifth, we must control pests and diseases. The common pests and diseases of Bromus stumps are longicorn, commonly known as "drilling insects". Female beetles bite bark and lay eggs on branches. The newly hatched larvae feed under the bark and grow into trunks and roots. Damaged plants are often eaten and die. During the prevention and control, we can judge the position of pests according to excreta, insert moderate wire-stinging larvae into the wormhole, or make holes with cotton balls soaked with 200 times dichlorvos, poison the larvae with drugs, and then seal them with wet mud. Red spider, also known as fire spider, is also a common pest in broom stump landscape. Size less than 1 mm, orange-red or reddish-brown oval. Spiders weave webs on the leaves of plants and pierce branches and leaves with mouthparts to absorb juice. The chlorophyll of the damaged leaves was destroyed, the color turned yellow and faded, the leaves showed fine gray-yellow spots, the leaves gradually withered and fell off, and some even all the leaves fell off and died. It can be destroyed by spraying dichlorvos or dimethoate 1000 times to 1500 times.