麦穗不同粒位粒重差异及喷药效果研究

通过对小麦穗上不同部位籽粒的重要差异及盛花期喷药对穗上粒重分布的影响的研究，结果表明穗上不同部位籽粒的单粒重有显著差异，且可以分为大、中、小三个粒区。此外，盛花期喷药在提高粒重的基础上，还提高了麦穗各粒位上籽粒重量的整齐度。

Study on the Difference of Grain Weight among Wheat Ear and the Effect of Spraying Pesticide

This paper studied the grain weight difference of different parts of ear and the effect of spraying pesticide at full bloom stage upon the distribution of grain. The results were as follows: Per grain weight of different parts of ear had significant difference which can be divided into three types, i.e. not only grain weight, but also the regular degree of grain weight of different parts of wheat ear was raised when pesticide was sprayed at full bloom stage.