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本文是以墨西哥小麦品种“他诺瑞”(Tanori F-71)为例,对其在我国种植期间千粒重的变化与生态条件所作的相关和回归分析。结果证明,“他诺瑞”在我国北方春播地区种植,由于纬度高,春季气温回升快,出苗至抽穗阶段的生育天数较原产地缩短了20～42天,其千粒重与这一段的生育天数成显著的正相关,γ_1=0.5962~(**);整个长江以北地区,“他诺瑞”的千粒重还与抽穗至成熟阶段日最高温度≥30℃时,30℃以上的积温值成显著的负相关,γ_2=-0.5323~(**);南方地区引起千粒重下降的主要原因是赤霉病、白粉病的危害。以各麦区种植墨西哥小麦的平均千粒重达到原种平均千粒重的80%划为适应区,指出我国适于种植墨西哥小麦的地区有青藏高原春麦区、云贵高原麦区、北部春麦区,其次是华南早熟冬麦区和新疆麦区。
This article takes the Mexican wheat variety “Tanori F-71” as an example, and makes a correlation and regression analysis on the changes of 1000-grain weight and its ecological conditions during the planting in China. The results show that “he Nuorui” planted in spring sowing areas in northern China, due to high latitudes, spring temperatures pick up fast, the number of days from emergence to heading shortened 20 to 42 days compared with the origin, the 1000-grain weight and the number of days of fertility into Γ_1 = 0.5962 ~ (**). The grain weight of “Nuo Rui Rui” in the area north of the Yangtze River was also significantly higher than that of 30 ℃ above the maximum temperature of 30 ℃ from heading to mature stage Γ_2 = -0.5323 ~ (**). The main reason for the decrease of 1000-grain weight in southern China is the damage of scab and powdery mildew. The average thousand-grain weight of Mexican wheat planted in each region was 80% of the average 1000-grain weight of the original species. The regions suitable for growing Mexican wheat were identified as Spring Wheat, Yunnan-Guizhou Plateau and North Spring, followed by South China Precocious winter wheat area and Xinjiang wheat area.