Lawn planting and maintenance management

Lawn is a common recommendation in parks and greening areas, which is not only of high ornamental value, but also easy to grow, and some are specially planted on the roof. What are the skills of lawn planting and maintenance and management?

I. selection of land and land preparation

The root system of lawn is relatively developed, so we can generally choose good soil to plant. Before planting, clean up the weeds and stones on the land, then plough the land, level the uneven places, and finally sprinkle with base fertilizer. Replace poor or mixed soil.

2. Sowing and raising seedlings

There are several planting methods of grass seed sowing, planting, laying grass block, laying grass roll and so on, among which grass seed sowing is a common one in daily life, the specific methods are as follows:

(1) seed selection: excellent and qualified seeds should be selected and germination test and germination treatment should be done before sowing in order to determine the reasonable sowing amount. The grass seed used for sowing must choose the correct grass seed to ensure a high germination rate. Generally, the purity of grass seed is more than 90% and the germination rate is more than 50%.

(2) seed treatment: the seeds of Carex grasses can be washed with running water; Zoysia seeds can be soaked in 0.5% sodium hydroxide solution for 24 hours, then rinsed with clean water, and finally put the seeds in a cool and dry place to dry the seed coat to sow; buffalo grass seeds can be mechanically rubbed off the hard shell. There are two methods to treat the seeds of Leymus chinensis: one is to rinse the seeds with running water for 96h, the other is to soak the seeds in 40-50 ℃ warm water, stir them with a stick at any time, rinse with clean water after cooling, to remove the wax outside the seed coat, dry the seed coat and sow the seeds.

(3) sowing: the sowing time is mainly determined according to grass species and climatic conditions. Sowing grass seeds can be carried out from spring to autumn. As the climatic conditions are different in different places, the most suitable sowing time should be chosen according to local conditions. In areas where winter is not particularly cold, sowing in early autumn is the best, when the soil temperature is higher, the root is well developed, and the cold tolerance is strong, which is favorable for overwintering. In areas where it is difficult for lawns to overwintering in winter, spring sowing can only be used. However, spring sowing seedlings are easy to grow upright, and the sowing amount should be a little more. The sowing method is generally adopted. First, make a strip bed 3m wide on the ground, and soak the ground with irrigation. after the water permeates slightly dry, use a special rake (rake tooth spacing 2~3cm), vertical and horizontal trench, ditch depth 0.5cm, and then mix the treated grass seeds with 2 to 3 times fine sand and spread evenly in the ditch. It is best to sprinkle 1 stroke 2 longitudinally, then another 1 stroke 2 horizontally, then sweep the grass seeds into the ditch as far as possible with a bamboo broom, and flatten them with a flat rake. Finally, use the roller of 200~300kg to crush once (damp and clayey soil, not suitable for vibrating compaction). Spray seeding method can be used to establish sloping land and large area lawn. In order to make grass seeds emerge quickly and grow well, it is best to apply some quick-acting chemical fertilizers at the same time of sowing, such as ammonium sulfate 250kg/hm2, calcium superphosphate 500kg/hm2 and potassium sulfate 125kg/hm2.

Third, management in the later stage of sowing.

Water should be sprayed in time after sowing, and the water points should be fine and uniform, slowly soaking the ground from top to bottom, soaking through the soil layer 8~10cm. The amount of water sprayed for the first to second time should not be too large. It should be checked after spraying. If grass seeds are found to be washed out, they should be covered with soil and buried flat in time. After two times of irrigation, the amount of water should be increased, the soil should be kept moist, and the spraying of water should not be interrupted. In addition, the lawn must be surrounded to prevent serious uneven emergence caused by trampling.

Generally speaking, lawns are well planted, as long as we choose good land, sow seeds, and do a good job in the maintenance and management of watering, fertilization, diseases and insect pests.