水稻栽培在密植多肥的条件下,往往易发生提早封林,使地上部茎叶迅速生长,披叶丛生,致使水稻在前期产生徒长现象,影响通风透光,茎稈生长细弱,以至在水稻发育的后期因地上部和地下部发育的不平衡而发生倒伏,使产量大大降低。为了避免水稻前期茎叶徒长的现象,我们于 Rice cultivation in the dense planting more fertilizer conditions, often prone to premature closure, so that the aerial stems and leaves rapid growth, leafy clusters, resulting in pre-legumes produce elongated, affecting the ventilation and light, thin stem growth, and even in rice Late development due to the aboveground and underground development of the lopsided, so that output is greatly reduced. In order to avoid the premature growth of stems and leaves of rice phenomenon, we