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研究水稻在水培和江苏不同生态条件下根系的生长过程。节间数不同的水稻品种,一次根发生结束的生育时期不同。4个节间的在抽穗—乳熟期,5个节间的在孕穗—抽穗期,6个节间的在剑叶—孕穗期,7个节间的在倒2叶—剑叶期。上层根的发生,一般始于拔节前一个叶龄期,拔节后的3—4个叶龄期结束。
To study the growth of rice roots in hydroponics and Jiangsu under different ecological conditions. Internode number of different rice varieties, the end of a root growth period different. 4 internodes in the heading - milking stage, 5 internodes in the booting - heading date, 6 in the flag leaf - booting stage, 7 internodes in the inverted 2 leaf - flag leaf period. The occurrence of the upper root, usually begins before the age of a leaf jointing, after the join 3-4 end of the leaf age.