Green onions (species) are planted with great tricks, are you afraid that they will not be high-yielding?

Liliaceae Allium is a biennial herb. There are more than 100 species of vegetables in China. Onion vegetables play an extremely important role in vegetable production in China, the cultivated area accounts for 10% of the total sown area of vegetables, and the yield accounts for 7% of the total output. What "scallion people" are most concerned about is how to plant in order to produce high yield. Let's take a look at it together.

(1) the timing of seedling raising and planting:

In the first crop, seedlings were raised from the end of June to early July, planted in September, and listed in March to April in the second year; in the second crop, seedlings were raised in mid-September, planted in March to April in the second year, and listed in August to early September.

2. Selection of nursery sites:

Because the seedling raising time of the two crops is almost in the rainy season, we should choose the land where the land is flat, the terrain is slightly higher, the land can be irrigated by drought and waterlogging, and there are no lily vegetables such as onion, onion, leek and garlic for more than 3 years.

Third, apply sufficient base fertilizer:

Because the root system of Welsh onion seedlings is short and shallow, and the ability to absorb soil nutrients is poor, in order to cultivate strong seedlings, we must apply fully mature organic fertilizer and a certain amount of phosphorus and potassium fertilizer. The specific method is to apply 5000-6000 kg of rotten and finely crushed barnyard manure (except chicken, duck, sheep manure and stranger manure) per mu before cultivated land. 25 kg of sulfuric acid type three-element compound fertilizer was applied before sowing.

(4) intensive ploughing and raking, ridging and making beds:

In order to prevent underground pests from harming seedlings, poison bait should be applied again after the organic fertilizer is spread. That is, stir-fry yellow with 5 kilograms of wheat per mu, then mix well with 250 ml phoxim diluent, cover tightly for 3 hours, spread the ground, turn into the soil with organic fertilizer, and kill a variety of underground pests at one time. The ploughed land should be fully raked, raked and leveled. Before making a bed, open a ridge for watering on one side of the ground, and then make the bed. The width of the border is 1 to 1.2 meters, the width of the border is 20 to 23 centimeters, and the height is 8 to 10 centimeters.

After the border is done, first sprinkle 25 kg of three-element compound fertilizer (15% each of N, P, K) in the border, hoe thoroughly and hold flat, and then sow it in your hands.

Sowing seeds with 3 to 4 kilograms per mu can be either of the two sowing methods.

5. Planting and watering:

1. Sow seeds evenly on the flat surface of the border. After sowing, use a rake to cuddle carefully, so that the seeds are fully mixed with the soil, and buried shallowly in the soil, and then watered.

2. Stop watering when the water in the border reaches 6-7 cm deep.

VI. Timely planting:

1. The planting period of green onions: the planting period of autumn onions is closely related to the yield.

Compared with Lesser Heat's planting, the Summer Solstice's planting increased by 32.9%, Grain in Beard's by 41.4%, and the Beginning of Autumn's by 29.1%. It is better to choose the planting period of Grain in Beard (early June). It is also considered that onion seedlings have 130 days. Spring sowing seedlings are smaller than autumn sowing seedlings, and the planting period is about 15 days later.

2. Green onion planting and land preparation: the planting plot should be basically consistent with the seedling plot, but it should be beneficial to drainage to prevent water accumulation in the ditch in the rainy season, the last stubble land should not be ploughed, and ditches should be opened according to the planting row spacing required by the variety. The depth and width of trenching with spring onions is 30-35cm.

3. Green onion should be planted with sufficient base fertilizer: high quality fertilizer 5000kg, calcium superphosphate 50kg and compound fertilizer 30-40kg per mu should be applied to the ditch. After fertilization, turn 20-30cm deeply, loosen the soil in the ditch, mix the fertilizer well, and then hold it flat.

4. Green onion seedling grading: watering the soil for 3 days before seedling emergence, so that the soil is not dry or wet, it is not difficult to raise seedlings, and it is not contaminated with soil. Do with the seedling, with the classification (the seedlings are divided into 1, 2 grades) with the haircut root (leaving the root length 3-5cm), with the planting.

5. Planting seedlings of Welsh onion: the seedlings are graded and planted separately. When planting seedlings, the depth is not buried heart leaves, 7--10cm on the ground is appropriate, because green onion seedlings of different sizes, should be kept neat.

6. The planting density of Welsh onion: 1.3-16000 plants per mu in high yield field. The principle is: fertile land should be sparse, thin land should be dense; more fertilizer should be sparse, and less fertilizer should be dense. For the convenience of cultivating soil. At present, the method of enlarging row spacing and reducing plant spacing is adopted. Row spacing 65-80cm, plant spacing 5-8cm.