What are the seed selection and seedling raising methods for gongcai?

Gongcai is an annual herbaceous plant with a bright green color, a crisp texture, and a flavor resembling jellyfish, and it has extremely high edible value. It is a very precious dehydrated vegetable, not only excellent in taste but also rich in nutrients. Because it was once presented as tribute to the imperial court during the Qianlong period of the Qing Dynasty, and thereafter presented as tribute to the imperial court every year, it was called "gongcai" (tribute vegetable). So how do you select seeds for gongcai? What are the seedling raising methods? Let us take a look together below.

1. How do you select seeds for gongcai?

Select gongcai seeds that are high-yielding, high-quality, and strongly resistant to disease and stress. Before sowing, soak the gongcai seeds in cold water for 3-4 hours, then soak them in a 10% trisodium phosphate solution for 20 minutes, remove them, rinse them clean with clear water, and then carry out germination. The optimum temperature for gongcai germination is 15-20°C. Wrap the disinfected seeds in gauze, place them in a constant-temperature chamber at 15-20°C, and wash them once a day. Generally, after about 3 days, once the seeds show white sprouts, they can be sown.

2. What are the seedling raising methods for gongcai?

1. Land preparation and sowing

Gongcai has strong adaptability to the environment and strong growth capacity. It is best to choose fertile, slightly alkaline sandy soil with strong water and fertilizer retention capacity for planting, so as to improve the yield and quality of gongcai. After choosing suitable land, carefully check whether there are residual pesticides or herbicides, and if any are found, clean them up in time to avoid phytotoxicity to gongcai. Carry out tillage, land preparation, and fertilization to improve soil fertility and reduce the incidence of disease in gongcai. Dig planting holes in the land according to a reasonable planting density, place the seeds into the holes, cover the seeds with a thin layer of soil, and then sprinkle some water to keep the soil moist.

2. Seedling stage management

Gongcai seeds are relatively small, have poor soil-penetrating ability, and emerge slowly. Make sure the seedbed surface is moist to facilitate emergence. Generally, water once in the morning and once in the evening each day to keep the soil moist, and cover with a layer of rice straw on top to retain moisture. After the seeds emerge, remove the rice straw in time. When the cotyledons are flat and spread out, carry out the first thinning, with plant spacing controlled at 3-6 cm as appropriate. When the seedlings have 3 true leaves, carry out the second thinning, with plant and row spacing controlled at 15-18 cm. When the seedlings have 3-6 true leaves, carry out final thinning, with seedling spacing controlled at 20-25 cm square, and planting density controlled at 20,000-23,000 plants/mu. After final thinning, water regularly and carry out topdressing and weeding to ensure the growth and development of gongcai.

3. Timely harvesting

To ensure the quality of gongcai, it must be harvested at the right time. If harvested too early, it will affect the yield; if harvested too late, it is prone to becoming hollow, with increased crude fiber, causing a decline in quality. Generally, the best time to harvest gongcai is when the outer leaves and heart leaves of the gongcai plant are level with each other, but because regions differ, the harvest time is best adjusted and determined according to the planting region.

The above is an introduction to gongcai. Gongcai contains various amino acids, vitamins, and so on, and can both aid weight loss and detoxification and supplement nutrition. The price of gongcai on the market is also not cheap. Compared with other vegetables, gongcai is easier to manage and has fewer pests and diseases, making it a vegetable worth planting for farmers.

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