水稻塑盘育秧常出现横串根盘缠问题，严重影响抛栽质量，增加了抛秧工作量，影响了农民对抛秧栽培的积极性。 　　一、产生缠根的原因 　　1.播种质量 过量的营养土或填注营养土不平衡，造成穴与穴之间串土。秧苗根系沿土互相串联盘缠。种芽过长也容易造成缠根现象。 　　2.? Transplanting rice seedlings often appear horizontal string entanglement problems, seriously affecting the quality of throwing planted, increasing the amount of throwing transplanting, affecting the farmers throwing seedlings cultivation initiative. First, the root causes of entanglement 1. Sowing over the quality of nutrition soil or filling nutrition soil imbalance, resulting in a hole between the hole and hole. Seedling root system along the soil in series with each other winding. Long buds are also likely to cause entanglement. 2.?