Detailed Explanation of Key Points for Greenhouse Amaranth Cultivation Techniques
Amaranth is a fairly common leafy vegetable in our daily lives and is grown across a very wide area in our country. Now that cultivation techniques are becoming more and more mature, amaranth is mainly grown in greenhouses. Greenhouse cultivation is quite beneficial for the growth of amaranth, so how should greenhouse amaranth be grown? Below, the editor brings you the cultivation techniques for greenhouse amaranth. Let's take a look!
1. Seed selection and land preparation
Before planting greenhouse amaranth, the first thing we need to do well is choosing good amaranth varieties for planting. The varieties should mainly be those with good palatability, high yield and strong stress resistance. After selecting the varieties, carry out land preparation on the soil inside the greenhouse. The soil should be deep-ploughed to about 18 cm, and during land preparation, sufficient base fertilizer should also be applied. The base fertilizer should mainly be decomposed farmyard manure, combined with an appropriate amount of diammonium phosphate. After land preparation and fertilization are done, then make the soil in the greenhouse into flat beds about 1 m wide.
2. Seed treatment
After selecting the varieties, we also need to treat the amaranth seeds and properly soak them to promote germination. First, select plump seeds, then soak them in cold water for about one day. When soaking the seeds, it is best to rub and wash the seeds repeatedly. Then after soaking, remove the seeds and air-dry the moisture. Wrap them in moist gauze, then place them under a wet towel. Keep the temperature at around 20°C for germination. Observe the seeds every day for whiteness; when about 40% of the seeds have sprouted white, they can be sown.
3. Sowing at the right time
The sowing time for amaranth is also very important. Because the growth cycle of amaranth is relatively short, usually it takes only about 40 days from sowing to harvest. Both spring and autumn are suitable for growing amaranth. If cultivating in the open field, then sowing can be done from March to August. If growing in a greenhouse, then we can also sow about one month earlier. Before sowing, first water the soil thoroughly. Then mix the seeds with an appropriate amount of fine sand, and sow evenly by broadcasting. After sowing, tread it firm and press it down, then cover with a layer of manure soil, and finally cover with plastic film.
4. Strengthen management
If sufficient bottom water was applied before sowing, then there is no need to water again before the seeds emerge; generally they emerge in about a week. After the cotyledons of the seedlings emerge from the soil, remove the plastic film and do a good job of intertillage and weeding. At the same time, when the seedlings have grown about two true leaves, carry out this again, combining it with topdressing and watering. The fertilizer should mainly be compound fertilizer, with the amount kept at about 15 kg/mu. Then after half a month, apply topdressing again, also combined with watering. However, the field moisture should not be too much; pay attention to drainage during rain. Finally, after each harvest, water and fertilize once.
The above is a brief introduction to greenhouse amaranth cultivation techniques. That is all for today's introduction. This article is for reference only, and we hope it can help everyone!