Planting time and method of Welsh Onion

Welsh onion is a biennial herb of Alliaceae. There are more than 100 species of Allium vegetables in China, which are mainly distributed in Northwest, Northeast and North China. Onion vegetables play an extremely important role in vegetable production in China. The following is to introduce the planting time and methods of Welsh onions.

1. Planting time of green onions

1. Autumn planting

The seedlings were sown in early September in the first year, planted in the first and middle of May in the second year, harvested before winter, overwintered in cellar or open field, flowered in spring in the third year, and seeds were harvested in the second season. the seedlings can be listed as green onions from the first ten days of May to late June, and can also be planted in flat beds or narrowed rows before and after the Beginning of Summer as autumn onions, or as early spring shallot after overwintering.

two。 Spring planting

Sow seeds after the soil is thawed in early spring, supply them as shallot before summer, or harvest them as dried scallions or gully onions after planting. It can also be used for overwintering as shallot or as a seed plant.

3. Summer planting

Most of the seeds are sown from late July to early August, so they are also called spring onions. It is easy to complete the vernalization process, germinates early and blossoms quickly in the next spring, and usually goes on the market after scallion.

Second, the planting method of green onion

1. Selection of improved varieties

There are many varieties of green onions, and they are very useful to the environment. Basically, any seed can grow in any place, but it is related to its yield and quality. Therefore, before planting, we have to choose varieties suitable for the local climate. We can first make a survey on the local green onion planting situation, and choose varieties with high quality and high yield and good market conditions to plant. Secondly, multiple varieties can be planted in time to check the economic benefits of planting, and then select the best.

two。 Soil preparation and fertilization

Scallions do not have high requirements for planting land, generally, as long as the light is relatively sufficient, and close to the water source, it is convenient to irrigate, plots rich in organic matter in the soil can be planted, and at least 30 centimeters should be turned deep during soil preparation. Clean up the impurities in the soil, such as pest residues and weed roots, so that the later management will be relatively simple, and finally break the soil as much as possible, and then rake flat. At the same time, according to the width of about one meter to 1.5 meters to make a ditch to make a bed, you can wait for planting.

3. Scientific planting

There are three main ways to grow Welsh onions, namely, planting reproduction, ramet propagation and bulb propagation. The suitable time for planting is generally about May-June of each year, and then strip sowing or strip planting is carried out according to the interval between each row and 30cm. The interval between each plant is about 5-8cm. Before planting, the planting land must be watered thoroughly, so the survival rate can be increased by at least 15%.

4. Fertilization technology

The right and wrong of green onions mainly need to be determined according to the fertility of the planting land and the growth of green onions. Generally, the first fertilization is carried out after the Beginning of Autumn. According to the normal fertilization situation, you probably need soil and miscellaneous fertilizer of 2000kg per mu, or use 200kg cake fertilizer, plus urea of 20kg, and so on, after summer heat everywhere, you can carry out the second topdressing, and this fertilization requires about urea of 15kg. The last thing is to look at the growth of green onions. If the branches and leaves of green onions are relatively thin, and there are relatively miscellaneous inverted hooks, then we still need to apply an appropriate amount of potash fertilizer and add an extremely appropriate amount of fertilizer to each growth of green onions. And supplement the nutrients needed for the growth of green onions.

5. Field management

Seedlings will emerge about 5-6 days after planting, but the temperature in summer is relatively high, and the rainfall is also relatively large, so we should be prepared for waterlogging and drainage, and ploughing should be carried out in time after rain to avoid soil consolidation. The root system of green onions is relatively weak, so the humidity in the planting land should be kept at least about 75%. When the weather is not particularly dry, there is basically no need for too much watering, only to strengthen the management of soil permeability and weeding in the field.

6. Pest control

The most common diseases and insect pests of Welsh onion are purple spot, onion rust, soft rot and thrips, leaf miner and moth pests. These three common diseases are basically due to excessive humidity in the field, coupled with relatively high temperature, leading to the production of fungi in the field, thus infecting the whole plant of Welsh onion, which can be controlled by chlorothalonil, manganese zinc substitute and can be killed. At the same time, the water management and temperature regulation in the field should be strengthened, while the pests harmful to the growth of Welsh onion can be sprayed with imidacloprid, avermectin and methamectin.

The above is the introduction of the planting time and methods of Welsh onions by Tuliu.com. There are many seedlings and transplants in the producing areas of Welsh onions in northern China, and most of the main producing areas in the middle and lower reaches of the Yellow River are sown in autumn, but the seedlings should be strictly controlled no more than 3 leaves before winter, most of them are sown in spring in the south of the Yellow River, and sowing should be done when the local temperature reaches 7 ℃.