生根才能开花,结实。可以说,没有根就没有庄稼。根的重要作用是吸收养分和水分。茁壮的禾苗必然有发达的根系。根在土中所占的空间要比茎叶所占的空间大五至十倍。有的禾本科植物,根的干重要超过地上部分好几倍,有人把种在木箱里的一株黑麦,在抽穗时洗净根部泥土,发现它竟有1400万条小根、150亿条根 Rooting to flowering, strong. It can be said that there is no crop without roots. The important role of roots is to absorb nutrients and moisture. Thriving seedlings must have developed roots. Roots in the soil occupy more space than stems and leaves accounted for five to ten times larger. Some grasses, root dry than the ground several times, some people planted in a wooden box of rye, wash the root soil at heading, found that it actually had 14 million small roots, 15 billion root