High-yielding cultivation of yam
Yam also known as yam, wild yam, yam. Yam is a herbaceous perennial herb, underground cylindrical, endoplasmic hypertrophic, rich in starch, can be used to make starch, tropical areas often used as food. Yam has a unique flavor, is a precious vegetable, is also a tonic, or a good raw material for winemaking. Now the high-yield cultivation techniques of yam are described as follows: The selection of yam is a kind of vegetable with underground meaty tuber organs as its product. The fibrous roots must be fine, and these requirements for soil physical and chemical properties are more stringent. Generally require deep soil, good air permeability, rich in organic matter, well-drained sand or sandy loam soil cultivation, high requirements of more than 60 centimeters, 80 centimeters. It is one of the key technical measures to drill and apply base fertilizers. After the cockroach has been well-prepared, choose a 1.5-meter-long, 2-cm-diameter piece to rock the steel plate with a hole near the crepe, and create a deep hole with a depth of 10 cm (allowing the yam to have a relaxed environment. It grows long and straight.) In combination with the application of decomposed organic fertilizers, such as high quality manure, human drying urine, chicken drying fertilizer and earth miscellaneous fertilizer, 2000 kg of Mushi. Timely sowing in mid-to late March, choose sunny days or days (not suitable for rainy days), cut the yam seeds into 5 cm per section, put each hole upright for a period of time, and do not put it upside down (pay attention to the isolation of the fertilizer to prevent the bad planting), then Cover earth 5-8 cm. ? Field management of yam is the use of underground tubers breeding, after germination, germination, seedling stage, hair growth and tuber expansion period. Before the hair growth stage, the growth of stems and leaves was the main factor, and after budding, it was the period of tuber enlargement. In the early period, stems and leaves and tubers grew vigorously, and tuber growth was the main factor in the later period. At this time, the dry matter accumulated by tubers accounted for more than 85% of the total dry matter. In the yolk period, the growth of stems and leaves is promoted. The amount of nitrogen fertilizer may account for 1/2 of the total amount of the whole growth period. Potassium fertilizer should be applied, and phosphorus and potassium fertilizers and the rest of nitrogen fertilizer should be added in order to facilitate the growth of tubers. Shallow ditch fertilization on both sides of the yam plantation line. Harvesting of yam in a timely manner The harvest period is very long. From the beginning of September, mom will continue until the Spring Festival of the following year. In order to obtain better economic benefits, it can be harvested at the beginning of September.
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