In promoting the return to nature, advocating the natural today, wild vegetables have gradually been favored by many people. Among the many wild vegetables in the ranks, leeks are particularly liked by consumers. Now we introduce the spring cultivation techniques of leeks as follows.
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Amaranth is resistant to cold, prefers cool and sunny weather conditions, suitable temperature for seed germination is 20°C-25°C, optimum temperature for growth is 12°C-22°C, and it can tolerate short-term low temperature of -7°C. Due to the short growing period of leeks, artificial cultivation can be planted once and harvested several times.
Spring amaranth can be sown from late February to late April and harvested from early April to mid June.
The best choice for planting leeks is tomato, cucumber, corn or garlic, and it is easy to cause diseases in continuous cropping. Till 15 centimeters deep, do not use basal fertilizer, make a 2 meter wide (even ditch) rake, rake 15 centimeters high, flattening and then sowing. Due to the favorable weather in the spring and the high emergence rate in the spring in the central and southern regions of the province, the rapid growth rate is 0.7-1 kg per acre.
Before and after the emergence of leek, it is necessary to water, it is best to use a watering can poured, avoid flooding to make the soil compacted, resulting in seedling difficulties or seedlings washed submerged. Before emergence, spray 3-4 times a day and spray water once a day after emergence. The growth period of leeks is short, generally top dressing 2 times, the first time in about 10 days after emergence, followed by 10-20 days to catch the second time. If the soil fertility is poor, it can be chased 1-2 times.
Leek plants are small, often mixed with weeds, and weeding is more difficult. Therefore, we should try to choose a small amount of weed cultivation. When weeds occur, they can be manually removed or removed in conjunction with field operations such as harvesting.
The main disease of amaranth is downy mildew, which can be sprayed with 50% carbendazim 500 times solution or 80% clotriaxone 400 times solution in the early stage of disease, spray once every 5-7 days, and even spray 3-4 times. The main pests are aphids and they should be sprayed and controlled in time.
Leek harvest properly, you can increase production. Usually use a knife to pick, stay small and close, but pay attention to evenly. Where seedlings are scarce, even large seedlings must be kept; in dense places, young seedlings must also be picked, so that the remaining seedlings can grow evenly and yields increase. When the leek grows 10-13 leaves can be harvested, after which can be harvested 4-5 times in succession, mu yield is generally 1000-2500 kg.