How to fertilize the lawn in general, what is the general dosage, and how many times a year to use f

In the growing season, nitrogen, phosphorus and potassium granular mixed fertilizer should be applied. It is generally applied after pruning and before irrigation. The base fertilizer is mainly organic fertilizer, which must be fully decomposed.

The amount of basal fertilizer should be 75 110 tons per hectare, and the amount of superphosphate should be 300 750kg, which can be combined with turning the ground to apply fertilizer.

The ratio of nitrogen, phosphorus and potassium should be controlled at 5, 4, 3. The application rate should be applied lightly and thinly in the long period of Wang, and the slow period should be stronger than that in the long period, and the fertilization outside the roots could be increased. Fertilization and watering should be closely coordinated to prevent damage to the lawn caused by improper use.

The use of organic fertilizers not only improves soil nutrition, but also improves soil porosity and permeability, and even helps the lawn to winter safely.

In northern Xinjiang, it is more appropriate to fertilize turfgrass twice a year, in early spring and early autumn. The first fertilization in early April (with an appropriate amount of fertilization) can not only make the lawn regreen early, but also help the cool-season turfgrass to recover damage and thicken the turf before the annual weeds germinate; The second fertilization in September not only prolongs the green period to late autumn and winter, but also promotes the growth of new branches and rhizomes in the following year.

In order to maintain a lawn in good landscape condition, long-lasting greenery, and high resistance to pests and diseases, it is necessary to maintain a certain amount of nutrient levels. Therefore, it is necessary to strengthen the topdressing outside the roots, and supplement other trace elements except N, P and K to meet the needs of its growth.

It depends on the purpose and size of it.

Generally speaking, whether it is a cool-season lawn or a warm-season lawn, it is necessary to achieve "appropriate time, according to demand, balanced nutrients, small amount and many times".

Cool-season lawns need a lot of fertilizer because they grow quickly after autumn and winter and warm in spring, and only a moderate amount of fertilizer is needed in the autumn when they are too hot and grow slowly.

Warm-season lawns reach their peak growth in midsummer, so it is important to fertilize them in late spring to give them enough energy to grow.

Whenever it depends on the growth situation, when they are yellowed, it means that there is a lack of chlorophyll, and the appropriate amount of nitrogen fertilizer should be applied.

Turf fertilization should be based on the turfgrass species, growth and soil nutrient status to determine the type, quantity and time of fertilization. In order to meet the needs of various nutrients in the growth of lawns, the principle of balanced fertilization should be adhered to.

Fertilization period:

By experience, often in early spring andLate autumnCarry out.

In general, warm-season lawns can be fertilized two or three times in a growing season, with late spring and early summer being the most important periods for fertilization. Southern region.

For warm-season lawns, slow-release fertilizer can be applied once in autumn to avoid the lack of greenery due to lack of fertilizer. Cool-season lawns are fertilized in late summer and late autumn.

Fertilizer dosage:

Lawn nitrogen fertilizer. The dosage should not be too large, otherwise it will cause the lawn to grow and increase the number of mowings, and reduce the lawn's ability to resist environmental stress. Generally, the annual nitrogen application rate of lawns with high maintenance levels is 30 to 50 kg per mu, and the annual nitrogen application rate of lawns with low maintenance levels is about 4 kg per mu.

The amount of phosphorus fertilization is generally 3 to 9 kg per mu for horizontal turf, 6 to 12 kg per mu for high-maintenance turf, and 3 to 15 kg per mu for new lawn.

to Poaceae. For turfgrass, the ratio of nitrogen, phosphorus and potassium should be 4 3 2.

The concentration of liquid fertilizer must be mastered. When the amount of solid fertilizer is small, sand or fine dry soil should be mixed with fertilizer to make the fertilizer spread more evenly. Every winter or early spring, apply organic fertilizer, such as compost or peat, to the meadows.

This can not only increase fertility, but also loosen the soil, improve soil permeability, and is conducive to the renewal of lawn root groups, generally applying 12-15 kg of organic fertilizer per mu;

Fertilizer twice a year is sufficient. Combine watering after the first regreening. The second time was in late summer before autumn. 20 catties of ammonia or 15 catties of ternary compound fertilizer per mu each time. Sprinkle, water after applying. aqui te amo。

What time of year is a lawn fertilized? Fertilizer lawn fertilization is mainly nitrogen fertilizer, and phosphorus and potassium fertilizer are used to successfully overwinter before wintering, generally spreading, and there are also special lawn fertilizer applicators, generally once in spring and once in autumn, one month before wintering.

These planted lawns are still said to be supplemented with fertilizer every year, so as to ensure that the lawn grows better and is a normal protection.

As the temperature gradually increases, the mixed cold and warm lawn needs to be mowed and maintained in time to ensure the recovery and growth of warm-season grass. Bermuda mixed grass blanket or turf rolls, from March to June every year, need to do a good job of technical maintenance to achieve the beauty of the grass and the four seasons.

Evergreen effect. The main measures are as follows: 1. Strengthen the frequency of pruning, prune once a week from March to April, and prune once every half a month after mid-May, and control the height of ryegrass at about 2 cm to inhibit the growth of cold-season grass.

Long, providing growth space for the regreening of warm-season grasses, Bermuda grass and Lanyin No. 3 grass begin to resume growth in March every year, gradually replacing cool-season grasses. 2. Sectional fertilization, from March to May in the early stage, because ryegrass is still growing.

For a long time, fertilization is difficult to be absorbed by warm-season grasses, but will increase the amount of ryegrass pruning, and fertilization needs to be strictly controlled, and growth regulators can be used to inhibit the growth of cold-season grasses in special cases. The coverage rate of the warm-season grass is reached.

To more than 50%, a small amount of high-tower compound fertilizer can be used to ensure the nutrients of the bottom grass, 8-10 grams per square meter, and more watering after application or fertilization before rain to dissolve the fertilizer. 3. Strengthen daily maintenance and pay attention to pest control.

When necessary, professional pesticides can be used for pest control. 4. Other remedial measures: grass stem replanting, due to excessive trampling or damage caused by the death of warm-season grass, the phenomenon of alopecia areata, after the discovery can be timely from the better recovery of the warm season.

Take out part of the grass block for replanting, the diameter of the replanted grass block is 5-10 cm, plant at intervals, and keep watering once every 2 days in the early stage of root system to speed up the formation of the lawn.

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To fertilize a 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.

Since lawns are mowed frequently, they are fertilized every year. The fertilization requirements for the lawn are also different according to the management requirements of the lawn. Ordinary ornamental lawns are generally fertilized 2-4 times a year, mainly with organic fertilizer or compound fertilizer.

If possible, try to choose special slow fertilization for lawn (such as Zhongwei Happy Forest Zhuangmei Lawn special fertilizer rooting type and insect resistance), which can prolong the fertilizer effect and continue to fertilize the lawn. The lawn with higher requirements can be supplemented with some foliar fertilizer based on phosphorus and potassium fertilizer in summer and autumn, and some trace element fertilizers with amino acid chelation can be selected according to the situation, which has the advantage of fast effect and high utilization rate, early spring application can make the lawn regreen in advance, and winter application can extend the green period of the lawn. Cool-season lawns should be fertilized with as little nitrogen as possible in summer to avoid inducing disease.

<> fertilization of the lawn can generally be fertilized by spraying or sprinkling, spraying is to first dissolve the fertilizer with water, then pour the fertilizer into the sprinkler irrigation equipment or other equipment, and finally spray the fertilizer on the lawn; Spreading is direct fertilization, that is, directly spreading fertilizer on the surface of the turf, but when fertilizing, pay attention to spreading fertilizer evenly, so as to maintain uniformity of grass in the lawn.

First, how to apply compound fertilizer to the lawn

1. Spraying: Mix the compound fertilizer into the water, and use sprinkler irrigation equipment or other equipment to spray the fertilizer on the surface of the turf after the fertilizer is dissolved.

2. Sprinkling: Sprinkle compound fertilizer directly on the surface of the turf, but pay attention to spreading the fertilizer evenly when sprinkling, so as not to damage the uniformity of the lawn.

Second, the application rate of compound fertilizer and other fertilizers

1. Compound fertilizer: the application rate is generally 15-20 kg per mu.

2. Diammonium phosphate: the application rate is generally 12-15 kg per mu.

3. Urea: The application rate is generally 10 kg per mu.

3. Precautions for fertilization

1. In spring and autumn, compound fertilizer is generally applied, and in summer, diammonium phosphophodiamidic acid, urea and other fertilizers are generally applied.

2. After entering the winter, the aboveground part of the grass in the lawn will wither and yellow, while the underground part will enter a dormant state, and fertilization will have no effect at this time.

3. When applying urea on the lawn, we should strive to be uniform (urea is generally suitable for top dressing), and can not be irrigated immediately after fertilization, let alone flooded with water, otherwise the nutrients in urea will sink deep into the soil, which will lead to a decline in fertilizer efficiency.