在稻、麦作物上,由于第n节叶原基和第n-3节分蘖的第1叶原基大体上同期分化,因而第n叶和第n-3节分蘖的第1叶可保持同伸。这种相关生长特征被称为“叶、蘖同伸规则。在叶、蘖同伸规则充分实现时,每一稻(麦)株应有的分蘖数目,我们称为理论分蘖数。理论分蘖数的多少,显然和n对应,并可用一定的数学公式作出准确表达。 On rice and wheat crops, the first leaf of the nth leaf and the 第-分 tillering in the 可-leaf can remain in the same extension because the nth leaf primordia and the 叶-3 tillering first leaf primordia differentiate substantially at the same time. This relative growth pattern is known as “the rule of leaf and tillering extension.” The number of tillers that each rice (wheat) strain should have when the law of leaf and tillering is fully achieved is called the theoretical number of tillers. Of the number, apparently and n corresponding, and can be used to make certain mathematical formulas to accurately express.