Key Technical Points for Site Selection, Land Preparation and Fertilization in Yam Cultivation
How should yams be managed after planting? From planting until trellising, timely cultivation and weeding should be carried out; later cultivation should be shallow rather than deep, so as not to damage the roots. A few days after the yams emerge, they begin to send out vines, so supports must be set up immediately to train the vines; to increase the light-receiving area, a trellis height of about 1.5 is best. After sowing and until the vines grow, manure can be spread on the ground surface, spread...
How do you select the site, prepare the land and fertilize when growing yams? Growing yams requires strict selection of the soil. To achieve high quality and high yield in yams, choose soil that is loose in texture, on high dry terrain, with deep fertile soil layers, and convenient irrigation and drainage, or sandy loam plots; yams should not be grown continuously. Continuous cropping easily causes soil nutrient imbalance and severe disease; yams should be grown in a rotation of more than 3 years. Cultivating yams requires deep plowing; it is best to plow deeply before winter and let the soil freeze, making the soil loose. As for tillage depth, for flat-block and cylindrical types, the soil can be plowed to a depth of 30 cm, and after plowing, flat beds or raised beds are made at 60-80 cm; for long-column types, furrows are opened at a spacing of 1 m. The furrows are 60-100 cm deep, and after backfilling the furrow soil, flat beds are made. Combined with land preparation, apply more than 5000 kg per mu of fully decomposed high-quality barnyard manure, and mix it thoroughly and evenly with the soil, because the main absorbing roots of yams grow horizontally and are distributed in the surface soil, fully and evenly. Because the main absorbing roots of yams grow horizontally and are distributed in the surface soil, fertilizer should be applied in the surface soil layer to facilitate absorption. Yams can sometimes be intercropped with other crops; when intercropping across beds, the furrow spacing for yams is determined by the bed width of the intercrop and the height of the yam supports, etc.