一、增加单株结铃数，拉长有效结铃期因棉花生长受低温霜露制约，为提高产量，拉长有效结铃时间，抓住伏前成铃的适宜气候，争取早结铃多结铃。在种植时间上，应抓住早春冷尾暖头，提早打钵育苗，或搞地膜栽培来增加单株结铃数。二、适当加大亩株数，增加群体结构从各地试验、? First, to increase the number of bolls per plant, to extend the effective boll period due to cotton growth by low temperature frost constraints, in order to improve the yield, extend the effective knot time, seize the appropriate pre-boll weather, strive for early bolls Ring bell. In the planting time, we should catch the early spring cold tails, early play bowl seedlings, or engage in plastic film cultivation to increase the number of bolls per plant. Second, an appropriate increase in the number of acres of plants, increase the population structure from all over the trial?