What to do with lawn mowing and fertilization

Lawn mowing. 1.Pruning principle: the old leaves that are cut off from the upper leaves can continue to grow, and the young leaves that are not damaged can grow; The tillering of the stem base produces new shoots, and the nutrients absorbed and stored by the stem base, roots and stubble ensure the need for nutrients for regeneration. 2.

Mowing time and frequency: Generally speaking, warm-season lawns only have one peak growth period in summer, and should be mowed more in summer; In the spring and autumn cold season lawn grows slowly, the number of pruning should be reduced; Winter cold-season lawns have dormant phenomena and should.

Reduce the number of prunings as appropriate. Cool-season lawns have two peak growth periods, spring and autumn, and should be strengthened and mowed at least once a week during these two peak periods; In the summer, the cool-season lawn goes dormant and is generally mowed every 2 to 3 weeks; Winter.

In the season, lawns need to have enough nutrients to overwinter, so the number of mowings should be gradually reduced in late autumn.

Pruning height: The determination of pruning height not only needs to be determined in strict accordance with the 1 3 principle, but also takes into account the height of the base blade to the ground. If the mowing height is too low and a large number of growing points are cut, the turfgrass will lose its ability to regenerate; Trim high.

Too high can create an unkempt, puffy, untidy appearance, and can also cause problems for lawn managers due to the increased density of dead branches. The mowing height of the area lawn is not for golf course greens or tee lawns.

The trim height is; The mowing height of golf course fairway and football field lawn is 2 4cm; green ornamental lawn 4 6cm; Highway slope protection lawn 8 13cm

Lawn fertilization. A good fertilization plan should ensure that turfgrass grows healthily, evenly throughout the growing season, and maintains good quality. By selecting the appropriate type of fertilizer, preparation.

Set the appropriate amount of fertilizer, the number of times of application, and the time of fertilization, and use the correct fertilization method to complete.

Fertilizer selection: lawn fertilizer includes natural compound fertilizer, fast-acting fertilizer, slow-release fertilizer, compound fertilizer, fertilizer and weedicide, insecticide and fungicide mixture, etc. When choosing fertilizer, we must combine the actual use and take into account the characteristics of fertilizer, so as to achieve the purpose of efficient fertilization.

2.Fertilizer application amount: Generally speaking, the amount of fertilizer applied for the two peak growth periods per year, the first time (the peak growth period) is 70 90kg hm2 Nitrogen: phosphorus:

Potassium = 10 (1 2 is slow-acting): 6:4

The second time (5 June) 30 kg hm2 (nitrogen: phosphorus: potassium about 10:

Fertilization time: The best time to fertilize warm-season lawns is early spring and midsummer, and autumn fertilization should not be too late to prevent reducing the cold resistance of the lawn. Late autumn fertilization is beneficial to the wintering of the lawn and early regreening in spring, and the amount of potassium fertilizer is increased in summer, and nitrogen fertilizer is used cautiously.

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According to the nutrient needs and fertilization time of the lawn at different times, the fertilizer can be divided into basal fertilizer, seed fertilizer and top dressing.

1) Apply basal fertilizer.

The fertilizer is spread on the ground with a manure spreader before sowing or transplanting, and the fertilizer is deeply covered in the soil during ploughing. Or use a plough-mounted fertilizer applicator to apply fertilizer into the furrow when ploughing.

2) Seed fertilization.

At the time of sowing, seeds and fertilizer are sown into the soil at the same time. In the past, mixed application methods of seed and fertilizer were mostly used, and in recent years, more reasonable seed and fertilizer application methods such as lateral deep application and positive deep application have been widely used.

3) Apply top dressing.

During the growth of the lawn, apply fertilizer near the roots of the lawn; Or use the spray method to apply water-soluble nutrients (foliar fertilizer) to the foliar surface of turfgrass, which is called extra-root top dressing.

Lawn fertilization should be based on basal fertilizer. In addition to sandy soils, it should be supplemented by top dressing of nutrients including trace elements. Generally, the soluble nitrogen of sandy soil is easy to leach, so the number of fertilization should be more, and long-term nitrogen fertilizer should be the main fertilizer.

Depending on the dosage form of fertilizer and the needs of lawn plants, there are usually three methods: spreading, burrowing and spraying. Dry granular or powdered fertilizers can be sprinkled or hole-applied, and liquid fertilizers or water-soluble silty fertilizers can be sprayed.

Due to the large population and high density of the lawn, in order to make it grow vigorously and improve its anti-epidemic ability, the content of nitrogen, phosphorus, potassium and trace elements in the soil can be tested frequently when conditions permit, and the fertility can be replenished in a timely manner. Fertilization should be done before watering or rain. It can be sprinkled with special fertilizer rooting type and insect resistance of Happy Forest Zhuangmei Lawn, providing comprehensive nutrients for the lawn, efficient rooting, and insect pests.

In general, the word green is 3 out of 1,000.

to five thousandths. Results in one week. Squatting seedlings can be appropriately increased.

Note 1: To fertilize the lawn, we must first know the characteristics of the lawn's demand for different fertilizers.

Nitrogen fertilizer plays a very important role in the life activity, color and quality of turf. In general, with the exception of legumes, most lawn plants must meet their nitrogen fertilizer needs. The demand for potassium fertilizer in lawns is also different in different growth periods, and generally grasses require more potassium at the tillering stage.

Note 2: Pay attention to the application of organic fertilizer to the lawn.

Why should we pay attention to the application of organic fertilizer? There are several main reasons:

1. It has the advantages of high active ingredient content, fast fertilizer efficiency and easy use.

2. Contains macroelements and trace elements necessary for lawns.

3. Most of the nutrients in organic fertilizers are in an organic state, which are decomposed by microorganisms and converted into soluble components for turfgrass to absorb and utilize.

The details are as follows: 1. Fertilizer requirements of lawn plants In addition to leguminous lawns, the nitrogen required by most lawn plants mainly comes from the application of soil and chemical fertilizers. Plants need a lot of nitrogen, and the level of soil organic matter content directly affects the amount of nitrogen, and the lawn bed soil is fertile, and the ability to supply nitrogen is stronger.

2. The effect of inorganic fertilizer and organic fertilizer on lawn plants are the two main fertilizers used in lawn, each with its own characteristics. Ammonium carbonate, urea, potassium dihydrogen phosphate, superphosphate, etc. in inorganic fertilizers have high effective nutrient content, fast fertilizer efficiency, convenient storage, transportation and use, but long-term application in the lawn will destroy the soil aggregate structure and change the pH of the lawn soil, so it is necessary to pay attention to the application in combination with organic fertilizer.

3. Several commonly used application methods of inorganic Kuanhe buried fertilizer, commonly used in nitrogen fertilizer, ammonia, urea, etc. Ammonia is generally only used as a base fertilizer during planting, and ammonia is poured into the deep soil in the lower part of the floor bed and then covered with soil.

As winter turns to spring, everything recovers, and as the temperature rises, the turfgrass that has been dormant throughout the winter begins to regreen. After a cold winter, the lawn seems to have dried up and messed up; If left untreated, it will seriously affect the healthy growth of the lawn.

Replay

The lawn should be trimmed in advance in the spring, fill in the cracks in the frozen and cracked soil, and repair the lawn that is seriously damaged. When the lawn is just beginning to regreen, for the overly compacted lots, the topsoil of the damaged lawn is turned up, and the loosening is thoroughly raked to remove debris to form a fine lawn bed. Re-sowing grass seeds, the sowing amount is slightly higher than the normal amount, and after sowing, the surface layer is covered with sieved fine soil.

Watering

When the temperature stabilizes above 0, it should be poured with water to wash off the dust on the lawn leaves to better receive sunlight and photosynthesis. The more intense the lawn use, the greater the water demand. If it is a lawn that is more than three years old, before watering, it is necessary to comb the grass, remove the dead grass, and pat Sun Cha to cut the turf to make the surface permeable and breathable.

Ventilation

After the lawn grows for many years, due to human trampling and other reasons, there is a phenomenon of compaction, which is easy to cause poor breathing of the lawn root system and affect the growth and development of the lawn. After the soil thaws every year in the northern region, the soil should be loosened in the compacted section to increase the root permeability, and the soil can be cleaned, and a small amount of fertilizer can be applied to return to green in advance. Aeration should be combined with reseeding and fertilization to save labor and time.

Fertilization

Routine fertilization should be carried out in the spring. Fertilization in the early stage of rejuvenation can promote the growth of terminal buds 7 to 10 days earlier and is conducive to root growth. In spring, organic fertilizers with more nitrogen content are mainly applied, and the variety and amount of fertilizer should be determined according to the use of the lawn, the variety of the lawn and the water and fertilizer conditions of the soil.

In general, the new lawn should be fertilized more, and the old lawn should be less; Aging lawns should be applied more; Single-seeded grass lawn should be applied with an appropriate amount of nitrogen fertilizer, puffed dry fertilizer and phosphorus and potassium mixed fertilizer; Tall fescue and ryegrass mixed lawns should be applied with a small amount of nitrogen fertilizer and slow-release organic fertilizer, slow-release compound fertilizer or peat. If the soil is too alkaline, apply some ferrous sulfate.

Pest and disease control

In spring, preventive measures should be taken in areas where pests and diseases are serious to prevent the spread of pests and diseases.

Weed control

Weed control is an important part of lawn management in early spring, especially when newly built lawns are allowed to multiply and destroy the entire lawn. Manual weeding should be done early and quickly, and it is suitable for carrying out after the toppings are watered. The use of chemical weeding should be aimed at weed control, determine the appropriate herbicide and dosage, and it is best to carry out weeding when the weather is sunny and windy, and the temperature is high.

Spring lawn weeds are mainly broad-leaved grasses, which can be controlled by using Yuanxiao + Yongqi.

Trim

In spring, it is necessary to grasp the time and height of the pruning. Carefully managed lawns should be mowed before they are fully green, followed by watering and fertilising. New lawns and lawns that were not well managed in the previous year and need to be improved should be mowed relatively early.

When the lawn grows to 8 to 10 cm, mow it, leaving 4 to 5 cm of stubble. The mowing time of single-seeded grass lawn should generally be slightly later than that of tall fescue and ryegrass mixed lawn, and the stubble retention should be slightly lower.

1. The height of more than 10 cm can be mowed, and the lawn can be planted above 15. Cool-season lawns are ready to go, but the temperature is low and no seedlings are produced.

2. Lawn mowing, should master the principle of 1 3, the lawn that grows higher should be mowed in stages, not to the required height at one time. Each trim is cut off 1 3 leaves or height, to make the lawn have normal photosynthesis. If the mowing is done to the required height, the ability of the lawn to assimilate the products is reduced, and it is easy to degrade the lawn and even die.

3. When the lawn grows too vigorously, the mowing height of the lawn should be increased as much as possible, and the trimming can be adjusted to the normal height after trimming for 3-5 days, so that the mature leaves can be buffered and pruned. This protects the lawn from light hazards, which we call sunburn. Because the lawn grows too high, the grass stems underneath are adapted to the shade for a long time, and if they are cut too low, they are completely exposed to the light, which is very easy to cause burns.

4. The frequency of turfgrass mowing depends on how fast the turfgrass grows. Some grasses grow fast and need to be pruned frequently, while others grow slowly and need to be pruned less often. For example, the false frugal grass is relatively less pruned, while the dogtooth root and carpet grass potato digging are pruned more frequently.

Fine fescue and purple fescue are also pruned less frequently. Of course, this is not certain, if nitrogen fertilizer is applied sufficiently, it will grow quickly and prune frequently. In addition, warm-season lawns are relatively frequently mowed in summer, while cool-season lawns are relatively frequent in autumn.

5. Under the condition of proper lawn moisture management, the greater the amount of irrigation, the more frequent the lawn mowing times. Conversely, in dry conditions, the lawn grows slowly and there are fewer mowings. Do not prune if you have just been irrigated or if the soil is wet.