我站在十年以前,根据小麦分蘖及其成穗所需要的条件,研究成功小麦清棵促苗壮的措施。自1966年开始,先应用于稀播繁殖田,近几年又逐步推广到大田生产中。实践表明,当小麦苗蘖不足或因播种过迟造成大面积晚茬麦时,采用清棵是获得大幅度增产的有效措施。一、增产原因小麦清棵所以能显著增产,主要是它能促进麦苗多长叶、多分蘗、多扎根,确保苗壮,单株成穗多、穗头大。其原因有三方面:一是,清棵后,分蘖节处的温度相当于地表面温度,并且地表面温度的日较差大于不清棵的分蘖节 I stood ten years ago, according to wheat tillering and the conditions required to become a spike, to study the success of wheat seedling measures to promote strong. Since 1966, it has been applied to the field of sparse propagation and propagation in recent years and gradually extended to field production. Practice shows that when the shortage of wheat tillers or due to late sowing caused by a large area of ​​late crop wheat, the use of clear trees is an effective measure to significantly increase production. First, the reasons for yielding Clear wheat trees so it can significantly increase production, mainly to promote how long wheat seedling leaves, more tillers, more roots, to ensure strong seedlings, spike per plant, spike large. There are three reasons for this: First, after clearing a tree, the temperature at the tiller node is equivalent to the ground surface temperature, and the daily difference in surface temperature is greater than the tiller node