Amaranth is mostly open-air direct seeding, and it can be sown at any time from early April to August in the north, and it can be harvested and marketed in batches from June to October. Because amaranth is a high temperature short sunshine vegetables, spring sowing shoots and flowers later, stem, leaf growth fast, quality tender; and summer and autumn sowing, high temperature short sunshine conditions are easy to get to meet, so shoots and flowers early, stem, leaf growth is slow, quality coarse old.
Amaranth reproduction by seed, to harvest seedlings, more than the use of live; to harvest young stems and leaves, you can live, can also be transplanted seedlings.
Amaranth in rows of sowing, pay attention to the choice of varieties. When sown in spring, colored amaranth and red amaranth should be sown first, then green amaranth. Because the color amaranth is generally cold hardy, color amaranth and red amaranth heat resistance are poor, early sowing can be early harvest, so that the yield increased; green amaranth is generally heat resistance is strong, following the color amaranth and red amaranth harvest, harvest period is longer, can still ensure a certain yield. When cultivating in summer and fall, it is best to choose the green amaranth that is more heat-resistant.
When cultivating amaranth, you should choose a plot of land with flat terrain, convenient drainage and irrigation, and few weeds. Amaranth seeds are very small and the ground preparation must be fine. Amaranth seeding amount according to the temperature of different cultivation seasons to decide, early spring temperature is low, poor emergence, the amount of seeding should be increased, per 667 m 2 with the amount of 3 kg; late spring sowing the amount of 2 kg; summer and fall sowing, with the amount of 1 kg.
Amaranth is usually sown with dry seeds. Sowing in the open ground in the spring, when the sowing period is early, or early spring cover cultivation, before sowing needs to be soaked to germinate, the seeds in a gauze bag, placed in warm water soaked for 3 to 4 hours, remove, remove excessive moisture, set at 28 ~ 30 ℃ to germinate, the embryonic root exposed to the seed coat, can be sown. Open field sowing, when the temperature is more suitable, if the soil moisture is good, can be evenly sown seeds, covered with a thin layer of sifted manure, and then covered with mulch to moisturize, the cotyledons break the ground to remove the mulch; if the soil is dry, before sowing in the beds of the first irrigation, and so the water seeped down to the seeds, and then covered with manure, thick about 0.4 cm. Early spring sowing about 10 days can emerge, late spring and fall with dry seed sowing, 4 to 5 days out of seedlings, germination "water" sowing, 2 to 3 days seedlings can be out of all. Seedlings grow 2 true leaves, growth accelerated, the first fertilizer, grow 4 ~ 5 true leaves, the second fertilizer, and then every harvest 1 chase 1 fertilizer. Fertilizer to nitrogen-based fertilizer, combined with watering, should be light not thick. In addition to watering with fertilizer in summer, you should also water a few times to reduce the ground temperature.
Amaranth is generally practiced once sown and harvested several times. Seedling height of 7 ~ 10 cm when the first harvest, between the plucking of large seedlings and overgrowth of dense seedlings, and later according to the field seedling growth, but also between the seedlings 1 ~ 2 times, so that the seedling spacing to about 13 cm. When the height of the plant reaches about 25 centimeters, leave 5 to 10 centimeters at the base and cut the shoot tips. Wait for the side branches to grow and continue to harvest.
Spring cultivation of amaranth, sowing 50 to 60 days after the start of harvesting, has been received in June to July, per 667 meters 2 production of up to 1500 to 2000 kg. Summer and fall cultivation of amaranth, about 30 days after sowing can start harvesting, only 1 to 2 times, per 667 m 2 yield up to 1000 kg.