Cultivation techniques of rhubarb

Rhubarb is a perennial plant of Polygonaceae rhubarb, which is widely used as a traditional Chinese medicine in China. Rhubarb has the effects of clearing heat and purging fire, dispelling blood stasis and detoxification. Now the planting area of rhubarb is getting wider and wider, and more and more people use it. Many people want to plant rhubarb on a large scale. But do not know how to start, then the following editor will bring you the planting technology of rhubarb, let's have a look!

1. Land selection and preparation

Rhubarb has poor heat resistance and is suitable to grow in a low temperature environment. Usually planted in areas about 1200 meters above sea level, the root of rhubarb extends so deep that the main root can even extend to about 50 centimeters underground. When choosing planting soil, it is necessary to ensure that the soil is deep and soft, rich in organic matter and normal drainage and irrigation, and should not be clayey soil. After selecting the land, we should do a good job in soil preparation, ploughing about 25 centimeters and applying sufficient farm manure as base manure. It should also be noted that rhubarb should not be continuous cropping, and at least four years of rotation should be carried out.

2. Planting at the right time

The main planting method of rhubarb is sowing and planting, but the storage period of seeds is relatively short. When selecting seeds, do not choose seeds that have been stored for more than a year. The germination rate of seeds that are too old is low. Usually sowing in spring and autumn, pay attention to sowing density, dig a good sowing hole, put 5 seeds in each hole, and then cover fine soil, do a good job in water and fertilizer management, and promote seed germination. For example, when planting in areas that are not suitable for direct seeding, we can use the method of seedling transplanting, make a good seedling bed, dig a good field bed, manage according to the management method of direct seeding, and transplant properly according to the weather and seedling growth after emergence.

3. Seedling management

If it is sown by direct seeding, when the seedlings grow to about 9 cm, there should be time seedlings to get rid of weak growth, diseases and insect pests and other seedlings. Then wait until the growth to about 15 cm, and then fix the seedling work, each planting hole should not be more than one seedling. Seedling transplanting is usually carried out in spring and autumn and other mild seasons, transplanting according to the size of the seedlings, while digging planting holes while planting. Pay attention to the distance and depth between planting holes to ensure that the seedlings can grow normally, cover fine soil after planting, step on and press, build slow seedling water, and improve the survival rate.

4. Field management

The growth and maturity period of rhubarb is relatively long, and it usually takes about 4 years to harvest after planting, so it is necessary to do a good job of cultivating soil and weeding in the planting cycle. Weeds are the greatest threat in the seedling stage, and weeds should be weeded about 3 times. In the later stage, weeds and the growth of rhubarb are observed in time to prevent grass famine and promote the growth of rhubarb. Then there is the work of topdressing. Rhubarb needs a relatively large amount of fertilizer, so in addition to applying sufficient base fertilizer, it is also necessary to apply fertilizer at least twice a year, mainly farm manure, combined with an appropriate amount of compound fertilizer to meet the nutritional needs of rhubarb.

Because the growth period of rhubarb is relatively long, so in the first year after transplanting, we can properly interplant and interplant to improve land utilization. Then do a good job in field management, strengthen the growth ability of rhubarb, promote the growth of rhubarb and increase the yield. This is the end of today's introduction, this article is for reference only, friends who want to know more related information, please continue to follow us!