小麦粒重降低原因与防御对策研究

通过试验和调查研究，对１９９８年小麦粒重降低原因进行了分析。结果表明，厄尔尼诺现象造成气候条件的异常是粒重普遍降低的基本原因；麦蚜为害是粒重大幅度降低的重要原因；而品种的综合抗性差以及栽培管理不及时更是其主要原因。重视培养地力，选用综合抗性强的小麦品种，抓好中后期追肥、浇水管理和加强病早防治等，是保证小麦获得高而稳的粒重，实现小麦持续增产增收的战略性措施。

A Study on the Cause of Wheat Grain Weight Reduction and Prevention Countermeasure

The cause of wheat grain weight reduction was analysed in 1998 by test and investigation.The results showed that anomalous weather conditions,harm of wheat aphid,poor comprehensive resistance of varieties and perfunctory cultivated management resulted in the wheat grain weight reduction by a large margin enriching soil fertility,selecting wheat variety with good comprehensive resistance,emphasizing apply fertilizer and irrigation at middle and later period,strengthening prevention and cure of plant diseases and controlling pests and so on were the strategic measure to ensure getting high and stable grain weight and achieve increasing both wheat production and income.