The lawn is one of the hardware components of the square, and its quality directly affects the overall appearance of the square. Even pruning is the most important part of lawn maintenance. If the lawn is not pruned in time, the upper part of its stem will grow too fast, and sometimes it will set seeds, which will hinder and affect the growth of the lower trample-resistant grass, making it a wasteland.
The lawn pruning period is generally from May to September. The lawn pruning height generally follows the 1/3 principle. The first pruning is carried out when the lawn is 10 cm to 12 cm high, and the stubble height is 6 cm to 8 cm. The number of pruning depends on the growth rate of the lawn. Usually June to July is the most vigorous period of lawn growth, 1 to 2 times every 7 to 10 days, and 1 to 2 times every 10 to 15 days at other times. After repeated pruning, the lawn not only has developed rhizomes and strong covering ability, but also is low, the leaves are thinner, and the ornamental value is high.
When pruning the lawn, the pruning belt must be parallel, and the pruning direction must be changed each time. The edge of the lawn is generally trimmed with scissors to maintain its beauty.
Fertilization is another important part of lawn maintenance. The more times the lawn is mowed, the more nutrients are taken away from the soil. Therefore, sufficient nutrients must be supplemented to restore growth. Lawn fertilization is generally based on nitrogen fertilizer, and compound fertilizer is applied concurrently. The fertilizer application rate is 8 kg to 12 kg per mu, and the number of fertilizations depends on the type of lawn.
Generally, lawns are fertilized 7 to 8 times a year. The concentrated time for fertilization is between April and September, especially the autumn fertilizer in September is particularly important.
The lawn should be fertilized evenly. For this purpose, the fertilizer can be applied in half from two directions. After fertilization, water should be applied in time to fully dissolve the fertilizer and promote the absorption of nutrients by the roots.
Watering Lawn grass has different drought resistance due to different varieties, and it needs sufficient water during its vigorous growth stage. Therefore, timely watering is another measure to maintain a good lawn. Generally, in the hot and dry season, water once every 5 to 7 days in the morning and evening to wet the roots up to 10 cm to 15 cm. It is advisable to water in other seasons to protect the soil roots from a certain amount of humidity, but it is best to use multi-directional sprinkler irrigation when watering to maintain uniform irrigation, save water, and remove dust from the grass surface.
Drilling holes and forking soil for aeration The lawn needs to be drilled and forked for aeration 1 to 2 times a year. After drilling holes, fill the lawn with sand, and then use a toothed rake and a hard broom to sweep the sand pile evenly, so that the sand penetrates into the hole, continuously ventilates, and improves the water seepage of the deep soil. The thickness of the sand layer on the grass surface should not exceed 0.5 cm. The best time to drill holes and fork soil for aeration is in early spring every year.
Remove weeds and weeds should master the principle of “remove early, remove small, and remove completely”. Use a knife for a small amount, and dig out with a shovel when the amount is large and concentrated, and then treat it in a centralized manner, then level the ground and replant. In addition, chemical herbicides can also be used, such as 20% dimethoate emulsion, 25% wettable profenofosin emulsion 2,4-d liquid, etc., sprayed on a windless and sunny day, the temperature is preferably above 25℃, then the drug effect is very fast, and the dosage can be halved. Proper mixing of herbicides can improve the efficacy. But be cautious to avoid counterproductive results. Choose the corresponding herbicide according to the type of weeds. The herbicides for controlling broadleaf weeds are Caokuojing and Kuomie. Generally, broadleaf weeds are sprayed with Caokuojing at 200-300 times liquid; when controlling grass weeds, use Caohejing 250-300 times liquid for uniform spraying, which can effectively control grass weeds such as crabgrass, tendon grass, foxtail grass, barnyard grass, lycopodium, wild oats, and teff. When broadleaf weeds and grass weeds occur at the same time, use 150 times liquid of Hekuojing for uniform spraying, which can achieve the effect of killing multiple weeds at one time. To control sedge weeds, spray 200-300 times of Mesabendazole. One application can cause the rhizomes of Cyperus rot, and the recurrence rate is very low.
Lawn diseases are mostly fungal, such as rust, powdery mildew, sclerotinia, anthracnose, etc. They often exist on the dead roots, stems and leaves of plants in the soil. When they encounter suitable climatic conditions, they will harm the lawn, hinder the growth of the lawn, and turn yellow or die in pieces or blocks.
The prevention and control method is usually to use fungicides to prevent or treat according to the occurrence of diseases. Commonly used fungicides for prevention include methyl thiophanate, carbendazim, chlorothalonil, etc. Pests that harm lawns include leaf-feeding and root-feeding pests such as noctuid larvae, armyworms, snails, grubs, mole crickets, and ants. Commonly used insecticides include dimethoate, cypermethrin, and dichlorvos. When preventing and controlling, the lawn should be low-cut and then sprayed.
If the lawn is bald or partially dead, it needs to be renewed and rejuvenated in time. That is, when applying fertilizer in early spring or late autumn, mix the germinated grass seeds and fertilizer together and sprinkle them evenly on the lawn, or use a roller to cut a slit every 20 cm on the lawn and apply compost to promote the growth of new roots. For the lack of soil and root leakage caused by frequent pruning, watering, and cleaning of the dead grass layer, add soil and roll it during the budding period of the lawn or after pruning. Generally, it should be done once a year, and rolling is done more often in early spring after the soil thaws.
Post time: Nov-27-2024