How to grow big leaf mustard?

How to grow big leaf mustard? Please guide the planting methods of large-leaf mustard can refer to the following: 1) cultivation season. Large-leaf mustard is suitable for planting in autumn and spring protected areas in northern China. Autumn seeds are generally sown from August to October, harvested from October to November, planted in spring protected areas from January to February, and harvested on the market when the plant grows to a certain size from March to April. it is easy to bolt and blossom when harvested late. 2) main points of cultivation techniques. Sow seeds on ①. Large-leaf mustard is generally planted after raising seedlings. The seedling bed should choose the land with good water conservation and fertilizer, the width of the seedling bed is 1.0-1.1 meters, the amount of fertilizer applied in the bed is the same as that of broccoli, strip sowing, strip spacing 5 cm, groove depth 1 cm, seed spacing 2-3 cm, pouring enough bottom water before sowing, sowing and covering soil. The seedlings are raised in the greenhouse in winter. After sowing, cover the small arch shed for heat preservation, cover the seedlings with a layer of fine soil after the seedlings are unearthed, after the cotyledons are unfolded, the distance between the seedlings is 3 cm, remove the weak seedlings and diseased seedlings, and water them according to the seedling condition. when the seedlings grow to 1-2 leaves, loosen the soil and weed properly between the seedling rows, and prepare to plant when the seedlings grow 3-4 leaves. ② site preparation and colonization. Seven to 10 days before planting, the soil was fertilized with 22500 kg of rotten compost per hectare, turned over, leveled, made the border, the width of the border was 1.1m, the planting line was 3 rows, the plant spacing was 35cm × 35cm, the root of big leaf mustard was slow, and the survival rate after planting was related to the planting technique, so be careful not to hurt the root and make the root twisted and suspended. ③ field management. Watering for 7-10 days after planting, depending on the condition of the seedling. Big-leaf mustard is a leafy vegetable, and nitrogen fertilizer is the main topdressing. Because the small plants with 7-8 leaves are on the market in the north, they are usually topdressing 1-2 times, once after planting slow seedlings, 150-225 kg nitrogen fertilizer (urea) per hectare, and then topdressing again according to the situation. In winter, the protected areas should pay attention to ventilation, cold protection and heat preservation, and the temperature should be controlled at 15: 20 ℃ in the daytime and more than 5 ℃ at night. ④ harvesting. As it is a small plant for consumption, about 7-8 leaves can be harvested at any time after 40 days of planting. Click to get more mustard planting techniques click to get more vegetable planting techniques