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小麦是“胎里富”庄稼,在苗期形成一个良好的长势非常重要,这是因为:在一般生产条件下,只有早期大分蘖才能成穗;苗壮根深,利于抗旱抗寒;冬季土壤深层温度较高,可以延长根系发育时间,形成“上闲下忙”;根、蘖等营养体生长是以几何级数成倍地增加,基数越大,增长得越快。所以把小麦苗期的生长基础打好,就好比搭好了丰产的架子,为以后的增穗、增粒和增重奠定了基础,也
It is very important that wheat grows into a good growing state at the seedling stage because only the earliest large tiller can become a panicle under the normal conditions of production. The deeper soil temperature can prolong the root development time, forming a “leisurely busy”; root, tiller and other vegetative growth is multiplied by the geometric progression of multiple, the greater the base, the faster growth. Therefore, laying the foundation for the growth of wheat seedling is like setting up a shelf with high yield, which lays the foundation for increasing spike, grain increment and weight gain in the future.