In the dry season of spring (February to May), the green water must be watered again. Pay attention to drainage in summer (June-August) and rainy season. The accumulated water shall not exceed 12 hour; Watering should be timely according to the biological characteristics of shrub varieties. Water should be poured thoroughly, and cofferdam should be carried out before watering to prevent water from flowing out; Pay attention to the relationship between the upper and lower plants during irrigation, especially where there are conifers, pay attention to water control and timely irrigation, which will not affect.

Fertilize soil or land

Ordinary trees should be applied with base fertilizer after defoliation and topdressing before germination, and topdressing should be done once in the growth period for those with long flowering period. Shrubs and small trees dig an intermittent flat ditch under the crown shape, and the depth of the ditch is to reach the root system. In winter, the application should be deep, and the application ditch is shallow near the tree and deep far away. Organic base fertilizer is mainly applied in winter, and quick-acting topdressing is mainly applied in summer.

1. Fertilizer selection

According to the needs of shrub varieties, flowering characteristics and growth and development stages, organic fertilizer, inorganic fertilizer and special fertilizer are selected.

2. Fertilization time

According to the flowering characteristics and growth stages of shrubs, timely fertilization. Flowers and shrubs can be fertilized before flowering, mainly topdressing phosphorus and potassium fertilizer.

3. Fertilization method

When fertilizing, the fertilizer should not be exposed, and it should be buried or watered. When fertilizing, avoid the contact of fertilizer with leaves, and water it in time after fertilization; According to the types and uses of shrubs, basal fertilizer 1 time and topdressing twice a year; Color block shrubs and hedges are applied with base fertilizer twice a year and topdressing four times a year.

Shrub pruning requirements

According to the types and uses of shrubs, evergreen shrubs should generally maintain the natural and beautiful shape of clusters, cut off long branches, cross branches, jointed branches, drooping branches, budding branches, pest branches and dead branches in time, and keep ventilation and light transmission;

For the aging main branches of tufted shrubs, we should cultivate long branches by stages or cut off old branches for renewal in line with the principle of "preserving the new and eliminating the old"; Flower-watching shrubs should master the development law of flower buds, the flowers and trees that bloomed slightly in that year should be pruned before germination in early spring, and the branches that had bloomed in the previous year should be shortened to promote the germination of new branches. Flowers and trees that form flower buds that year and bloom in the early spring of the following year should be moderately pruned after flowering. Flowers and trees that bloom on old branches with low flowering rate should be updated year by year, old branches should be kept cultivated, and new branches that are too dense should be cut off; Modeling shrubs (including colored shrubs) are generally trimmed by modeling method, and their shapes, contours and lines should be clear, and the surface should be flat and smooth according to the specified shape and height. When the shrub is too high to affect the landscape effect, the intensity should be trimmed and the pruning time should be dormant; After trimming, the incision should be smooth, without splitting or short piles; Prune not less than 6 times a year, hedges and modeling shrubs not less than/kloc-0 times a month, and colored shrubs not less than 6 times a year; Hedges, whether circular, trapezoidal or rectangular, should be cut from top to bottom, and the top and sides of the hedge wall should be bright on three sides; Pruning should be carried out in strict accordance with the technical operation requirements, pay attention to safety, and remove the cut branches and fallen leaves in time.

Intertillage weeding requirements

Tillage should be done in time, and loosening the soil should not affect the roots of plants. Weeds around shrubs should be removed and soil ventilation should be ensured in time. Weeds removed should be removed at any time.

transplant

Dead shrubs should be uprooted in time and replanted with new seedlings with similar specifications and the same variety; When transplanting trees in the growing period, some branches and leaves should be trimmed without affecting the plant shape;

Cold and antifreeze

Shrub drainage in autumn, stop fertilization and control irrigation to promote lignification of branches and enhance cold resistance; In winter, shrubs and soil should be watered in time to keep soil moisture and prevent trees from drying up. Windbreak walls should be erected on the windward side to prevent cold, and they must be firmly erected; Shrubs that are not cold-resistant should be wrapped with cold-resistant materials to protect their plants from freezing.