地膜覆盖栽培甜菜能够增温保墒,保持土壤疏松,抑制杂草滋生,抑制盐碱上升,促进甜菜早发、全苗、壮苗,提早工艺成熟,减少苗期病虫害,增产、增糖、增效益。一、播前准备 1.土地与茬口:选择地势平坦、排水良好、微碱性土壤的地块,前茬以小麦、油菜、亚麻、大豆、棉花、绿肥、多年生苜蓿等作物为好,不宜重茬或迎茬。因为甜菜庞大的直根系吸肥力强,需肥量大,自土壤中 Mulching sugar beet mulching can increase soil moisture, keep the soil loose, inhibit the growth of weeds, inhibit the increase of salt and alkali, promote the early development of beet, whole seedling and strong seedling, mature early, reduce seedling diseases and pests, increase yield, add sugar and increase benefit . I. Preparing for sowing 1. Land and stubble: Select land with flat and well-drained soil and slightly alkaline soil. Crops such as wheat, rape, flax, soybean, cotton, green manure and perennial alfalfa are good for the former crop. Or confrontation. Because beetroot large root direct absorption Sufficient, large amount of fertilizer, from the soil