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从近几年的生产实践看,我区春小麦产量高低受千粒重影响较为明显。如64年、68年、72年、73年、75年、77年等减产年份,千粒重都比较低。从影响频率上看也比较高,大约每2～3年就有一次。因此在攻粒数夺高产的同时,分析研究千粒重降低的原因,是夺取小麦高产、稳产的重要问题。一、七七年小麦灌浆情况去年小麦千粒重普遍降低,也是减产的主要原因。墨卡一般比千粒重较高的76年低4～5克,斗地一号约低2～4克。
Judging from the production practice in recent years, the output of spring wheat in our district is obviously affected by the 1000-grain weight. Such as 64 years, 68 years, 72 years, 73 years, 75 years, 77 years and other production cuts, 1000 grain weight is relatively low. From the impact of frequency is also relatively high, about once every 2 to 3 years. Therefore, when the number of agglomeration wins high yield, the analysis of the reason why the 1000-grain weight is reduced is an important issue to seize the high yield and stable yield of wheat. First, the seven or seven years of wheat grouting Last year, the 1000-grain weight is generally lower, but also the main reason for the reduction. In general, the Mika is 4 to 5 grams lower than the 76-year-old with a high grain weight of 1 to 4 grams.