Planting techniques of coriander

Coriander is a familiar flavored vegetable with small and tender leaves, slender stems and tulips. It is a seasoning in soup and drink. It is often used as seasoning in salad, or in ironing and noodle dishes. The origin of parsley is along the Mediterranean coast and Central Asia, and is now grown in most areas.

Planting conditions

Cilantro can withstand the low temperature of-1 ℃ to 2 ℃, the suitable growth temperature is from 17 ℃ to 20 ℃, the growth is slow when it is over 20 ℃, but it stops growing when it is 30 ℃. Coriander is not strict with the soil, but the soil with good soil structure, strong fertilizer and water conservation and high organic matter content is beneficial to the growth of coriander.

Seed treatment

Because the seed shell is hard, the conventional method of sowing and emergence is slow, the seeds can be spread on the flat ground before sowing, and the seeds can be rubbed evenly and forcefully with less hard objects, so that the shell can be broken, and then the seeds can be sowed directly (or soaked to accelerate germination). Generally, seedlings emerge about 8-13 days after sowing.

Variety selection

There are large leaf varieties and leaflet varieties. Large leaf varieties have high plant height, large leaves and high yield, while small leaf varieties have short plants, small leaves, strong aroma, cold tolerance, strong adaptability and slightly lower yield. There are many varieties of cultivated leaflets.

Land preparation

2000-3000 jin of farm manure, 10 kg of diammonium phosphate and 10 kg of potassium sulfate were applied per mu to level the land. The use of strip sowing or sowing, strip sowing, sowing are covered with soil 2-3 cm, 3-4 jin per mu. Step on it with your foot after sowing, or suppress it with a leveling tool, and then water it to keep the soil moist to facilitate seedling emergence. At the same time, we should also pay attention to the phenomenon that the top of the seedling is not unearthed due to the soil consolidation before the coriander is unearthed, and check the seedlings in time after sowing. If the phenomenon of soil consolidation is found when the seedlings are unearthed, it is necessary to spray water to loosen the soil in order to help the young buds to grow normally.

Planting time

It can be planted in spring, summer and autumn, and the suitable sowing time in autumn is after the middle of August, and the production quality is better.

Field management

In order to create suitable growth conditions for coriander and achieve the conditions of suitable temperature and humidity, it is necessary to carefully plough, loosen the soil and weed for many times. When the seedlings grow to about 3 cm, the seedlings are interspersed and fixed. Generally, there are 2-3 times of ploughing, loosening soil and weeding during the whole growing period. At the top of the seedling soil for the first time, a light pickaxe or a small rake was used to slightly break the soil and loosen the soil to eliminate the plate layer. At the same time, unearthed weeds are pulled out to facilitate the growth of seedlings. The second time is carried out when the seedling height is 2-3 cm, and the strip sowing can be carried out with a small flat hoe to loosen the soil properly, combined with pulling out weeds. The third time is when the seedling height is 5-7 cm. In this way, early ploughing, loosening the soil and weeding can promote the vigorous growth of seedlings. After the leaves are sealed on the ground, no matter sowing or sowing, there is no longer ploughing and loosening the soil, but attention should be paid to pulling out weeds.

Parsley is not tolerant to drought and should be watered every 5-7 days, basically during the growth period of the whole plant, to keep the soil moist. In the middle stage of growth, about 10 kg of urea per mu is applied to ensure good growth.

Harvest

Coriander can be harvested about 30-40 days after sowing at high temperature and 40-60 days after sowing at low temperature. Can be harvested occasionally, can also be harvested at one time.