Abstracted soils: the best sand is chosen for fertilizing estuarine, tilling more than 30 cm and applying base fertilization. Seeding can be done in the spring or summer, with seeds being put into hot water at 40°c for about four hours. Field management: timely seedling and seedlings, attention to weeding and fertilization. Pest and pest control: the high incidence of frost is in the summer and the high incidence of folate and root disease is in june and needs to be actively combated。
1. Soil
The ground is not so demanding, it is well adapted to any soil and is resistant to drought. However, if better cultivation is to be achieved, it is appropriate to choose, as far as possible, fertile, lax and well-drained sands for alternative topography in a flat landscape, warm and wet environment。
Land consolidation
When it is grown, since it is a deep-rooted plant, it is best when it is grown that the land is more than 30 cm deep. It is also to be dealt with in conjunction with fertilization, which is done once before the land is tilled and planted。
Base fats can be used to select farm-based fertilizer or chemical fertilizers, mainly phosphorus fertilizer, potassium chloride, urea, etc., at approximately 2000kg/acre. Fertilizers are applied in a manner that is fully balanced with the soil, and then the land is levelled and the drains repaired so that cultivation can begin。
Seeding
Slate root can select two seasons for seeding: march, april in spring and may, june in summer. Under climatic conditions, the north is more suitable for planting in march/april in the spring and the south for planting in may/june in the summer. Special attention needs to be paid to seeding, first of all, by burning seeds in hot water of more than 40 degrees for about four hours, and in order to achieve a levelling of each seed, constant mixing is required。
After the burning has ended, seeds can be sowed after they have been evenly mixed into grasswood ash. Before seeding, weeding with chemical herbicides would be preferable, alcohol cream and water would be sprayed on the soil surface and then seeded after five days. Seeding can take the form of either a strip or on-demanding, with attention to the future spacing of each plant, about 20 centimetres and 8 centimetres。
4. Field management
Management is dominated by weeding and fertilization. When seeding is followed by seedlings, it usually takes about 15 days to produce seedlings, and when seedlings are not available, they need to be replenished in time to reach a distance of 8 centimetres per plant. Weeding can be done after seedlings are planted, and it is advisable not to use chemical herbicides to weed them in order not to affect the quality of the ground. Fertilizer is used three times a year, mainly in urea, potassium, phosphorus and grass-wood ash。
5. Pest management
The main pests that are protected from the ground are frosts, leaf dead and root decay. The high onset of frosting occurs during the summer season, with the symptoms of white or gray rote leaves, at which time the soil moisture is improved by timely drainage and sprayed on the leaf surface with a suitable amount of bordeaux or simur. The high incidence of folate and root disease is around june, when it occurs, with attention to the timely drainage of the field and the avoidance of water accumulation, while multibacterium can be used to combat it。
