How to determine the number and period of fertilization of pasture

Base Fertilizer:Basal fertilizer is applied in two ways. First, before sowing, apply high-quality farm fertilizer, such as manure, compost or slow-acting fertilizer, to meet the needs of the entire growth period of forage, generally apply 1000-2500 kg of organic fertilizer, 10-20 kg of superphosphate or 20-25 kg of calcium, magnesium and phosphorus fertilizer, 8-10 kg of potassium chloride per mu, sprinkle before ploughing, and plough after sprinkling; The second is seed fertilizer, which is applied at the same time as the seed when sowing to meet the needs of forage seedling growth.

Seed fertilizer can be applied in the sowing furrow or hole, covered on the seed, or used for soaking and dressing. The fertilizers used, whether farm or chemical, must not affect the germination of seeds. <>

Top dressing: After the grass emerges, top dressing is carried out according to the growth of the grass during its growth period. Top dressing is mainly based on chemical fertilizer, and the top dressing method can be sprinkled, strip applied, hole applied, irrigated fertilization or foliar spraying.

The time of top dressing is generally in the tillering and jointing stage of gramineous forage, and the branching and budding stage of leguminous forage. In order to increase the yield of forage, top dressing should also be carried out after each harvest. Perennial forage grass should be fertilized once a year in spring to promote its early growth and rapid growth.

In autumn, top dressing is mainly phosphorus and potassium fertilizer, so that the forage grass can safely overwinter. The top dressing of gramineous forage is mainly nitrogen fertilizer, with a certain amount of phosphorus and potassium fertilizer. In addition to nitrogen topdressing fertilizer at the seedling stage, phosphorus and potassium fertilizers were mainly used in other periods.

That is, the base fertilizer (base fertilizer) before sowing and the top dressing during the forage growth period.

1) Basal fertilizer The purpose of basal fertilizer is to fertilize the soil and meet the requirements of fertilizer for the whole growth period of forage and forage crops. The application of basal fertilizer is mainly organic fertilizer, and organic fertilizer that is not well decomposed must be applied in autumn. Generally, it is applied every 3 4 years, 500 kg per mu and 1000 kg.

The methods of applying basal fertilizer include sprinkling, strip application, layered application and mixed application.

Spreading is to spread the fertilizer evenly into the ground before the soil is ploughed, and then turn in, strip application is to first dig a ditch on the field, apply the fertilizer into the ditch, and then sow the soil and cover the soil; Its advantages are concentrated fertility and high fertilizer efficiency, layered fertilization is combined with deep tillage, organic fertilizer is applied to the deep layer, and high-quality fertilizer and fast-acting fertilizer are applied to the upper layer of the soil by raking the ground; This not only provides the nutrients needed by the crops, but also promotes the rapid ripening of the soil. In production, manure and green manure are often mixed, and the manure decomposition is slow and the fertilizer effect is delayed; Green manure decomposes quickly, fertilizer efficiency is fast, and the mixed application of the two can provide sufficient nutrients for crops for a long time.

2) Top dressing is mainly based on fast-acting chemical fertilizer, which can timely meet the nutrient demand of forage and forage crops during the whole growth period and promote their growth and development. The type and amount of top dressing should be determined according to the results of the analysis of nutrients in the land known from the sampling survey.

The time of topdressing of artificial grass should be carried out after tillering (branching), jointing (stemming), heading (budding) and each mowing. Forage crops are carried out during the stalking, ear and grain tapping periods. Because this is a critical period for forage development and yield formation, topdressing can promote forage growth, increase forage yield and improve grass group structure.

For the type of top dressing, for gramineous forage, nitrogen fertilizer is mainly applied, with a certain amount of phosphorus and potassium fertilizer. For leguminous forages, phosphorus and potassium fertilizers are mainly applied, and a certain amount of nitrogen fertilizer can be applied at the seedling stage of the year of sowing. For meadows where leguminous and grasses are mixed, no or less nitrogen fertilizer is applied.

Quick-acting fertilizer can be applied once a year, preferably after grazing or mowing, in conjunction with harrowing and irrigation.

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.

It depends on its use and area Generally speaking, whether it is a cool-season lawn or a warm-season lawn, it is necessary to achieve "according to the time, according to the needs, balanced nutrients, a small amount of many times" cold-season lawn, after autumn and winter to spring when it grows rapidly, so it needs a lot of fertilizer, to the summer overheating and slow growth of the amount of fertilizer required to reduce, autumn only need to apply a moderate amount of fertilizer. 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.

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 improper use of the lawn from causing damage to the lawn.

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.

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.

1. The best time for fertilization should be the season when the temperature and humidity are the most suitable for turfgrass growth.

2. However, the specific fertilization period varies with the grass species and the level of management. For topdressing once a year, it is better to warm the grass in late spring when it begins to turn green, and cold ground grass to the end of summer.

3. Top dressing twice, warm ground lawn is applied in late spring and mid-dawn to summer, mainly in late spring, the first fertilization can be used with fast-acting brother fertilizer, but fertilization in late summer and early autumn should be careful to prevent turf grass from being damaged by frost when the cold comes; Cold-ground lawns are applied in mid-spring and late summer, mainly in late summer, with less or no fertilizer in mid-summer and late spring.

1. Base fertilizer: Basal fertilizer is applied in two ways: one is before sowing, apply high-quality farm fertilizer such as manure, compost, or slow-acting fertilizer when ploughing the land, which is used to meet the needs of the entire growth period of forage, and generally applies 1000 organic fertilizer per 667m2

2500kg, 10 percent of superphosphate20kg or calcium, magnesium and phosphorus fertilizer 20?50kg, gasification potassium 8?

10kg。Sprinkle before ploughing, plough after sowing; The second is seed fertilizer, fertilizer is applied at the same time as the seed when sowing to meet the needs of forage seedling growth, the seed fertilizer can be applied in the sowing ditch or hole, covered on the seed, or used as soaking, seed dressing, the fertilizer used, whether it is farm fertilizer, or chemical fertilizer, can not affect the seed seedling. Basal fertilizer is generally applied in autumn, and the effect of spring application or application with planting is poor.

2. Top dressing: After the forage emerges, top dressing is carried out according to the growth of the forage during its growth period. Chai Chang Cha state fertilizer is mainly chemical fertilizer, and the top dressing method can be sprinkled, strip application, hole application, irrigation fertilization or foliar spraying.

The time of topdressing is generally in the tillering and jointing stages of grasses; Branching and budding stage of leguminous forage grasses. In order to increase the yield of forage, top dressing should also be carried out after each harvest. Perennial forage grass should be fertilized once a year in spring to promote its early growth and rapid growth.

In autumn, phosphorus and potassium are mainly used to reduce the fertilizer of tomato so that the forage grass can safely overwinter. The top dressing of gramineous forage is mainly nitrogen fertilizer, with a certain amount of phosphorus and potassium fertilizer. In addition to nitrogen top-dressing fertilizer at the seedling stage, leguminous forage grass is mainly phosphorus and potassium fertilizer at other times.

<> planting pasture generally requires fertilization. The method of applying sedan auspicious and virtual base fertilizer: before sowing combined with the ploughing of the land to apply high-quality farm fertilizer, such as manure, compost or slow-acting chemical fertilizer, used to meet the needs of the entire growth banquet period of pasture, generally can be applied per mu 1000-2500 kg of organic fertilizer, 10-20 kg of superphosphate or 20-25 kg of calcium, magnesium and phosphorus fertilizer, 8-10 kg of potassium chloride, fertilization should be paid attention to before ploughing, after ploughing.