北方滨海盐渍土区水稻分蘖后期的晾田管理

Management of Field Airing in Late Tillering of Rice in Northern Coastal Saline Soil Area

水稻分蘖后期的晾田是高产栽培的重要技术手段。晾田可以协调田间群体数量与质量、穗数与穗型、植株地上部与地下部、稻株与环境等诸多方面的矛盾,为最终实现水稻的高产高效生产创造条件。晾田一般应该在田间总茎蘖数达到目标穗数的80%~90%时开始;晾田的结束时间与晾田的轻重,需根据群体状况、土壤条件、品种特性及气象因素等情况灵活掌握。

Airing rice field in late tillering stage is an important technique for high yield cultivation.Airing field can coordinate the contradiction between population quantity and quality,panicle number and panicle type,above-ground part and underground part of plant,rice plant and environment,and create conditions for high yield and efficient production of rice.Airing fields should generally start when the total tiller number in the field reaches 80%to 90%of the target panicle number.The end time and the extent of airing field should be controlled flexibly according to the situation of population,soil conditions,variety characteristics and meteorological factors.