The screw dish is the underground rhizome of the Labia sylvestris plant, also known as the silkworm, the grass stone silkworm, and the soil ginseng. Because its shape is like a screw, it is named as a screw dish. Its fleshy texture, crisp and tender taste, can also be marinated into candied fruit, tastes very good, nutritious, many people love it, then the method of planting screw dishes has the following:
1. Soil preparation and fertilization
The environment adaptability of the screw dish is strong, cold and heat resistant. Under normal circumstances, there are very few pests and diseases. Hi-fertilizer is afraid of cockroaches. Therefore, it is better to choose fertile and loose sandy soil when planting. It is best to plant in areas where drainage and irrigation are convenient. In the autumn of last year, the land was ploughed, sun exposure was used, and the source of wintering pests was reduced. 1500 kg of farmyard manure and 100 kg of other compound fertilizer were applied per mu, and the planting was fined in the early spring.
Seeding
At the time of planting, the variety is selected according to the local climate and soil conditions. When the screw dish is planted, the tuber is selected for breeding. Once the sowing time is 10~15cm, it can be ditched. The sowing depth is 5~7cm, it should not be too deep or too shallow, and the control plant spacing is 1530-45cm. Each hole is sown with 1~2 pieces of uniform, disease-free and robust tubers. After sowing, the soil can be pressed. Generally, the control per mu is about 1~1.5, and the seed amount is about 100kg.
3. Field management
After emergence, we should carry out cultivating and weeding. One is to loosen the soil and promote the growth of rhizome. Secondly, to prevent weeds from affecting the growth of seedlings, weeding is recommended to be manually removed. Do not use chemical agents. If it is planted in large areas, use less harmful chemicals. . There is also proper cultivation to prevent the stems from being exposed. In the tuber expansion period, stop cultivating to avoid damage to the tubers. If the plants grow too vigorously, they should be properly trimmed to inhibit their growth.
4. Fertilizer management
After applying the base fertilizer, the late-stage topdressing is mainly based on quick-acting nitrogen fertilizer. Generally, 10 kg of urea is applied per acre from May to June, and it is applied once in July. In the tuber expansion period in August, at this time, it is necessary to re-apply the large fertilizer. In addition to continuing to apply urea, there is also the application of phosphorus and potassium fertilizer, 30 kg of diammonium phosphate per acre to avoid premature senescence of the plant and accelerate tuber enlargement. The management of water is relatively simple. Watering can be done during drought, but it is not necessary to fill the water in the sky, and timely draining and preventing flooding during the rainy season to avoid rotten roots.
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