应用栽培措施叠加效应发挥水稻超高产潜力

Multiple Overlap(or Summation)Efficiency of Different Culture Measurements on Increase of Super High Yielding Potential of Rice

本文阐述了我国水稻旱育稀植、抛秧、直播等轻简栽培技术的应用现状，分析了旱育稀植技术随着纬度升高，其增产效果明显提高的生态条件和技术原因。指出了水稻生育进程中出现的弱苗、弱蘖、弱穗、弱花、弱粒现象是影响水稻高产的田间制约因素。对此，相应提出了克服“五弱”的“均衡”栽培对策和理论，重点是依据不同生育阶段的特点，采取诸多栽培技术，形成措施的叠加（累加）效应，全面提高群体动态质量，发挥水稻超高产潜力。

This paper briefly introduces the application states of the light simple rice culture techniques,including dry nursery seedling sparse planting and scattered transplanting and direct seeding etc.The ecological condition and technological reason were analyzed for the effect of the dry nursery seedling sparse planting on yield increase with latitude rises.The phenomena of weak seedings,tillers,panicles,spikelets and grains appearing in rice development were observed.They were restrictive factors on high yield in paddy fields.Therefore,a balanced culture countermeasure and its theory were pointed out to overcome the five weak.The emphasis was to adopt multi culture techniques according to the characteristics of different growth stage to form multiple(overlap or summation)efficiency of different measures,and finally to raise dynamic population quality and exploit the super high yielding potential of rice.