Cultivation techniques of Manila grass

Manila grass can be directly sown by seeds, or propagated by nutrition, and then planted by ramets or covered with turf. Because the ear of this species is scarce, the seeds are easy to fall off when they mature, so it is difficult to harvest a large number of seeds for reproduction. In the practical application of lawn construction, the most common way is to spread turf. Because the grass layer has no tufted steamed bread-like protrusions, it has strong diffusion, occupation and competition ability, and the harm of weeds is relatively reduced, so it can be widely maintained and managed.

Before planting Manila grass, it is necessary to level the site and remove impurities and stones in the site, which can not only help the growth of grass, but also be easy to shape when raised, with less loss and more beautiful appearance.

When building an apartment, the plane should be flat to prevent water accumulation; After the lawn is formed, due to the dense grass layer, the surface of the soil layer has a feel, which affects the water permeability and air permeability. It can increase the air circulation on the soil surface through perforation, and can also cut off the old roots and promote their regeneration. Pay attention to proper pruning during the growth period to avoid the grass layer being too deep. When it is hot in summer, irrigate 2.5-4 cm every week. If the soil is sandy, it is best to irrigate it in 2-3 times. Weedy lawns, especially those near trees or buildings, are prone to lack of light and weeds. If it is not trimmed in time, it is easy to form steamed bread-like protrusions, which not only affects the ornamental value of the lawn, but also reduces the drought resistance of the lawn. In the dry season, these protrusions first appear yellow, which is easy to cause pests and diseases. Therefore, it is necessary to level and trim the lawn in time, improve the permeability of the lawn, promote the growth of stolons and the germination of lateral buds, adjust the uniform density of the lawn, promote the lawn to be flat and beautiful, and realize the beautiful and elegant garden landscape effect. The mowing height of the lawn should be 3 cm. If the lawn quality is poor, the height can be appropriately increased to 4 cm. The height of remaining grass should be properly controlled according to the growth potential and seasonal changes, but the purpose of pruning can not be achieved. If the remaining grass is too short, it will easily damage the grass roots and affect the regeneration and germination. Especially the overgrown lawn, don't trim it too short at one time. We should lower the mowing height one by one until it is suitable.

Generally speaking, lawns with good growth can be raised shorter, while lawns with poor growth should be raised higher; The grass is short in summer and tall in winter. In South China, the grass is mowed every 30~40 days every May ~165438+1October. Use other machines near buildings, trees and other places where lawn mowers can't cut. Be sure to cut all the places that should be cut, and cut out the whole flat lawn. Every year from the end of 165438+ 10 to the beginning of February of 65438+, it is the best time for the last pruning before winter, which is very important for Manila lawn to overwinter, and plays a great role in reducing leaf evaporation and improving plant drought and cold resistance. The first mowing after overwintering should be carried out from mid-March to early April. This can effectively promote lawn germination in early spring, vigorous growth and reduce pests and diseases. Fertilization and punching are mainly to avoid the aging problem of Manila grass. Due to the influence of lawn growth on soil nutrient consumption, rain erosion and human activities, the soil will gradually harden. The combination of timely fertilization and perforation maintenance is one of the effective measures to delay lawn aging.

Applying organic fertilizer during planting can simplify management and improve lawn quality.

Fertilize in time after every activity that severely tramples on the lawn. The first fertilization is mainly based on nitrogen fertilizer, combined with phosphorus and potassium fertilizer, that is, urea and potassium dihydrogen phosphate solution are mixed and sprayed once a week for 3 ~ 4 times continuously, so that the lawn can quickly turn green. Every year in late autumn and early winter, you can dig holes, apply organic fertilizer and mix river sand (or fine soil). This not only improved the permeability and structure of soil, but also leveled the lawn and applied base fertilizer to the lawn, which laid a good foundation for the growth of lawn in the coming year. Perforation combined with sand fertilizer application and proper watering can keep the lawn green for the longest time in the whole winter and shorten the yellowing time. Lawn water supply is an important work in lawn management. The leaf color of lawn is not only the basic index to evaluate the ornamental value of urban lawn, but also the main basis to judge the nutrient and water characteristics of lawn growth.

In the dry season, if we don't pay attention to replenish proper amount of water to Manila lawn in time, the lawn will wither and turn yellow soon, which will seriously affect the beauty of Manila lawn and even affect the germination ability in the coming year. In autumn and winter, Manila lawn should be properly irrigated and sprayed, and thoroughly drenched twice a week. In addition, the grass under the canopy can not be considered as the protection of trees, which can reduce watering. In fact, because the grass is long, the root system is shallow, the ability to compete for water is worse, and it is more likely to wither due to lack of water, so we must pay more attention.

Installing spraying equipment is the basic requirement of building high-quality lawn. If the layout is reasonable, installing advanced automatic sprinkler system will be of great benefit to the management and maintenance of lawn. It can not only ensure the supply of water, but also avoid the strong impact of watering on the lawn, damage the lawn and soil erosion; Spraying equipment can also be used to spray drugs or fertilize, and it is also an important means to reduce management costs and improve work efficiency. April-September is the peak period of lawn diseases and insect pests in Manila every year, and effective measures should be taken to prevent and control them in time. April to August is the prone period of grass rust in Manila, which is a harmful fungal disease. Its symptoms are as follows: small "piles" of rust-colored powder appear on the leaves, which will turn yellow and die in severe cases, and seriously affect the lawn landscape in a large area. May-September is the peak period of sudden occurrence and damage of Spodoptera exigua on Manila lawn. In case of warm winter weather, even at the end of 1 1, there will be explosion danger. Insect pests will cause the grass to turn yellow and die, usually disfigure the lawn within 2 ~ 3 days, or even destroy the whole lawn.