在小麦生产中,由于气候条件和栽培措施的差异,粒重的波动很大。这是造成产量不(禾文)的重要因素。特别是单产在700斤以上的高产区,往往由于千粒重的影响而不能高产再高产,已成为生产中一个突出而又急待解决的问题。为此,从一九七三年到一九七八年的六年中,我们重点观察了郑引一号在700斤以上产量水平条件下,不同年份、不同(扌布)期、不同密度、不同管理措施和不同苗 In wheat production, grain weights fluctuate widely due to differences in climatic conditions and cultivation practices. This is an important factor that causes no production. In particular, the high-yield area with a yield of more than 700 pounds per hectare may not be able to produce high yields and high yields due to the effect of 1000-grain weight. It has become a prominent and urgent problem in production. For this reason, in the six years from 1973 to 1978, we focused on the observation that Zheng Yin-1, with production levels above 700 kg, had different years, different stages, different densities, Different management measures and different seedlings