"Yang grass" when to fertilize leek? How do you do that? What kind of fat should I use?

Leek, also known as lazybones, sunrise grass, long-lived leek, leek, grass bell milk, etc., is a relatively common perennial herbal vegetable in China. It is deeply welcomed by people because it is edible all over the body and has the effects of invigorating the stomach and tonifying the kidney. But if you want to grow leek, you need to master fertilization. When will the leek be fertilized? How do you do that? What kind of fat should I use?

Fertilization time:

Generally speaking, within the first five days and the next five days of the Beginning of Autumn every year, it can ensure the current growth demand and future nutrition accumulation of leek. The principle of "three combinations" should be grasped in fertilization, that is, the combination of quick-acting fertilizer and slow-acting fertilizer, the combination of a large number of element fertilizer and trace element fertilizer, and the combination of organic fertilizer and inorganic fertilizer plus spraying new high-fat film, which can greatly improve the effective composition rate of fertilizer.

Choose a sunny afternoon, first carry out a hoe, and mix 40kg of compound fertilizer, 3.5kg of ferrous sulfate, 1.5kg of borax, 2.5kg of zinc sulfate, 2.5kg of manganese sulfate and 500,750kg of bean cake in each mu. Spray the mixed fertilizer evenly with 1000 times phoxim aqueous solution, spread it evenly between the leek beds, and then use a half-meter-long 5-toothed rake to hoe along the ridge under the leek rack. Try not to expose organic fertilizer to the surface, otherwise it will lose the meaning of fertilization. Finally, pour water once more along the ridge, and spray phoxim or pyrethroids on the leaves of the whole border to strictly prevent flies from laying eggs, and water again every 5-7 days. Note that the new leek planted in that year should be hoed 2cm before the leek leaves are crossed and ridged, and then paddled and watered again after uniform fertilization.

The law of fertilization:

The growth and fertilizer consumption are relatively small in the seedling stage, but in the peak period of vegetative growth, especially in the spring and autumn harvest season, the growth and fertilizer demand are large, so a large amount of fertilizer should be fertilized by stages. The 4-year-old leek has exuberant growth, strong tillering ability, high yield and the largest amount of fertilizer, which is the peak of fertilizer demand. More than 5-year-old leek, gradually enter the aging stage, in order to prevent premature senescence, need to strengthen fertilization.

After the seedlings are unearthed and the true leaves are released, the root system increases gradually. when the seedlings have 2-3 true leaves, the seedlings can be fertilized once and should be watered in time after fertilization. When the seedlings have 4-5 leaves, they can be fertilized again. The amount of fertilizer applied is basically the same as that of the first topdressing. Every 20 days or so in the seedling stage, you can chase fertilizer once, drain water and prevent waterlogging, and keep the border surface dry and wet.

Leek has strong adaptability to soil, sandy soil, loam and clay can be planted, but the soil with deep soil layer, loose plough layer and fertile soil is the best. Leek needs a lot of nitrogen, and should be combined with appropriate amount of phosphorus and potassium fertilizer to improve the yield and quality of its main edible leaves and leaf sheaths.

Adequate application of basic fertilizer is very important for growing leeks. It is usually used in combination with land preparation for border formation. We can buy organic fertilizer such as rotten chickens and cattle and apply it to the soil as base fertilizer before transplanting.

Timely topdressing: topdressing only after transplanting survives, topdressing every 5 murals every 6 days to the beginning of harvest, and then topdressing once or twice for each harvest. Do not apply fertilizer when picking moss, and then apply fertilizer after flowering to promote tillering. Fertilization time, once a year to stop harvesting leek, when leek germination 2-4 cm, combined with cultivated soil organic fertilizer once. Nitrogen fertilizer can not be applied alone when fertilizing, and the time should be controlled in 3-4 days after the new leaves grow out after each harvest of leek, nitrogen, phosphorus and potassium should be fully mixed and applied.

Leek gratifying manure can be considered when growing in the hospital, such as baby's feces and urine, dung and urine in buckets for 2 months, then transplant and survive for topdressing, which is applied every 5 times every 6 days, and the concentration is gradually increased from 10% dung water to 50%. Topdressing 1-2 times for each harvest. Other organic fertilizers, such as kitchen waste, are good fertilizers, of which earthworm fertilizer is the first.

What kind of fertilizer should I apply?

It is the most ideal to apply organic fertilizer + available fertilizer by stages. The young buds of leek are fragile, and the budding ability of the top soil is relatively weak, so for some fields where the soil is not loose enough, organic fertilizer should be re-applied to improve it, such as cow dung and so on.

Leek can be directly seeded or planted, spring and autumn seasons are suitable for planting (but also the peak growth period), and properly managed can safely survive the summer and winter seasons. Leek mostly sells stems and leaves, so it can be harvested and put on the market in its vegetative growth stage. In addition to applying enough loose and fertile organic fertilizer and compound fertilizer, base fertilizer should also be applied with quick-acting fertilizer based on nitrogen fertilizer.

At seedling stage, urea should be added in time to promote its growth, 20 jin of urea per mu should be applied, and 5 true leaves should be squatted to promote root management. At this time, may be due to climate reasons will breed underground pests, can be watered with matrine, chlorpyrifos prevention.

New planting leek, the first year should pay attention to strong seedlings and roots. Especially in autumn, it is the season for the rapid growth of leeks, so it is necessary to apply fertilizer again. Rotten manure or bean cake can be about 1000 jin per mu (depending on field fertility). It is recommended to apply fertilizer in ditch, and then draw hoe, cover soil and water in time. At this time, the field should be kept moist and watered when the humidity is less than 50%.

Planting leeks should be followed, and it is better to top-fertilize every harvest. Fertilization scheme suggested: balanced, appropriate; simple application of nitrogen fertilizer will increase the accumulation of nitrate in leek, so it is necessary to reasonably apply phosphorus and potassium fertilizer, organic fertilizer and so on in order to produce pollution-free leek.