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雨量、气温对产量的影响渭南地区影响小麦产量的气象因素很多,其中雨量关系最为明显。主产小麦的中部川源地区年平均降水量500—700毫米。但分布不均,7—9三个月降水量占全年总降水量57.6％。这种分布对小麦生产有利,多数年份基本可以满足小麦生长发育需要。但因降水量年际月际间变化较大,导致小麦产量低而不稳。鉴于小麦产量变化与当年生产条件有关。把建国以来划分成代表不同生产水平的年代阶
Influence of Rainfall and Air Temperature on Output There are many meteorological factors influencing wheat yield in Weinan, of which the relationship of rainfall is the most obvious. The main source of wheat in central Sichuan area annual average precipitation 500-700 mm. But unevenly distributed, 7-9 three-month precipitation accounted for 57.6% of the total annual precipitation. This distribution is beneficial to wheat production, most of the year can basically meet the needs of wheat growth and development. However, due to the large inter-annual precipitation variation, leading to low and unstable wheat yield. In view of the changes in wheat production and the current production conditions. Since the founding of the country divided into different levels of production of the chronology