作者在总结农民经验和多点观测资料的基础上,根据光条件与苗情的相互作用和相互制约的关系,初步提出了小麦各发育时期的丰产群体、低产群体和过旺群体的光条件指标及相应的苗情指标。并根据这些指标,提出小麦返青以后丰产麦田群体结构的调节措施,及措施的光效应,以为生产服务。 On the basis of summarizing farmer experience and multi-observation data, the author initially proposed the light condition indicators of high-yielding population, low-yielding population and over-population population at each developmental stage of wheat according to the interaction and mutual restriction of light conditions and seedling conditions And the corresponding seedling index. And based on these indicators, put forward the regulation measures of the group structure of wheat with high yield after returning to green and the light effect of the measures to serve the production.