1, seed treatment four-edged beans can be propagated by seeds or roots, and are generally propagated by seeds. Because the seed skin is harder, in order to improve the germination rate, the seed should be sun-dried for 1-2 days, soaked in warm water at 55 C for 15 minutes, then soaked in water for 24 hours, wrapped in wet gauze after removal, and promoted germination at 28 C, until the seed "white" can be sown. 2. When planting the seedling of the four-edged bean in the open field, dig holes in the high bed according to the plant distance of 60-70 cm and the row distance of 75-90 cm. Plant 2-3 seeds per hole, 6-7 days later, the seedlings have been unearthed, to check the seedlings in time, reseeding, to ensure the whole seedling. When 5-7 leaves are fixed, two plants are left, when 7-8 leaves are fixed, one plant is left, about 2000 plants per mu. 3, seedling management in the seedling period to carry out thinning, seedling replacement measures to ensure full seedling and strong seedling. When the seedlings have 7-8 leaves, remove the weak seedlings and deformed seedlings, select the healthy seedlings, and keep 1-2 seedlings per hole. After emergence, shallow tillage should be combined with weeding for 1-2 times, and soil cultivation should be carried out after weeding.