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White high-yielding cultivation techniques
The white peony is a perennial root plant in the grass, and the edible part is the fleshy stalk of the base. In China, it is mainly distributed in the southern region. In recent years, a large number of successful introductions have been made in North China. Its high-yielding cultivation techniques are introduced as follows: (a) Select a variety of varieties in Beijing and Tianjin, and the yield is stable and of good quality. Generally, the yield per mu is about 1500 kg, and the amount is about 200 grams, and the big one can reach 400. More than gram, the oyster meat is delicate, the fiber is less, and it is brittle, and it will be listed in early September. Good sales and prices. (b) The site selection is for shallow water or paddy field planting. The water level should not exceed 25 cm, preferably clay loam. The dry land can be drained, and dry cultivation should be done. After applying manure, it should be filled with water and cultivated in shallow water. Low-lying paddy fields, which cannot be drained, can be plowed with water. Gill white long growth period, dense plants, need more fertilizer. For each 1,000 kilograms of nitrogen produced, 14.4 kilograms of nitrogen, 4.9 kilograms of phosphorus pentoxide, and 22.8 kilograms of potassium oxide are required. Basal fertilizer is dominated by organic fertilizers, with nitrogen, phosphorus and potassium fertilizers. (3) Breeding and breeding seedlings can be propagated in tillers. Due to the variability of its seed species, it is necessary to select the parent species for seed retention every year. The standard of good mother plants is: neatly grown, the plants are shorter, and the tillers are densely clustered; the leaves are wide, the apex is not drooping, the height of the individual stem leaves is not very different, the last one is significantly shortened, the white leaves are concentrated and white, and the fat is fat. The ratio of long to coarse is 4-6; the fistula tract is short, the pseudo-stem is white on the side of enlargement, and the stem segments below the gestation are not excessively elongated; there are no ash and male fleas in the whole tussock; in addition, the average width and width of the pods, stems and leaves are The width of the second leaf outward from the heart leaf is positively correlated with the weight of the carcasses, and this correlation can be used as a reference for selection. After the selection of the plant strains, a sign was made. When the height of spring seedlings was more than 30 centimeters in the following year, the mud was dug out and mined with a knife, and then it was divided into small bundles with 5 to 7 plants per bundle. In the delivery, the flower stems should be minimized. After splitting the pier, the leaves are cut to about 60 cm, reducing the evaporation of water. (4) The temperature for planting and colonization is appropriate at 15-20°C, generally from early May to the end of May. A 100- to 120-day growth period is required before maturity and 20 to 30 days after planting, 10 effective tillers can be produced in that year. Planting density spacing 60 ~ 100 cm, spacing 25 ~ 30 cm, the best use of wide and narrow rows, two groups. Seedlings should be planted with the digging, when introduced, long-distance transport should maintain the humidity, cutting the tip before planting. (e) Irrigation strictly controls the depth of the water layer according to the growing season and season. Keep 25 centimeters from the germination period until delivery to raise the soil temperature; from late July to late delivery, maintain 10 to 12 centimeters, control the ineffective delivery; keep 20 centimeters after the start of pregnancy, so that the white immersed in water to promote its softening; winter Keep moist during the period. (6) Applying the first fertiliser 10 days after top dressing and cultivating planting. After fertilization, the rows of soil will be loosened and cultivated next to the plants. During the return period, 10 kg of urea will be applied per acre, and 15 kg of urea will be applied before the pregnancy. (seven) cut off the piercing seedlings after the autumn of the plant will be cut off the yellow leaves, in order to facilitate ventilation. Before and after the beginning of the spring of the following year, use a quick knife to cut the mound piers and remove the poorer tiller buds on the upper part of the mother mites. Can also be used to burn, burn some of the old leaves on the ground to achieve the effect of cutting mounds. From the end of April to the beginning of May, when the tiller height is about 30 cm, leave a seedling every 10 cm and remove the excess seedlings. 10-15 days after the sparse piers, pressure is applied to the strains and blocks of mud, so that the tillers spread out to grow around to improve the ventilation and light transmission conditions. (8) The harvest is not mature and is harvested every other day. The standard of maturation is the significant enlargement of the zygomatic sacrum, which is dehiscent on one side of the leaf sheath, revealing the flesh and blood; the heart and leaves meet and the two leaves converge toward the stem. When harvesting, cut about 10 centimeters from white spot, cut the leaves from the white spot, leave about 30 centimeters of leaf tip, and put it in a pouch. The white clams, commonly called shells with leaves, are easier to maintain white, tender and tender qualities, and are resistant to long-distance transportation and storage.