表1花前遮阴对小麦产量和产量构成因素的影响
Table1 Effects of pre-anthesis shading on grain yield and components in wheat
品种
Cultivar 处理
Treatment 穗数
Spikes
(×104•hm-2) 穗粒数
Kernels per spike 千粒重
1000-kernel weight (g) 籽粒产量
Grain yield
(kg•hm-2) 总干物质积累
Total DMA
(kg•hm-2) 收获指数
harvest index
扬麦158
YM158 CK 385.0b 45.60c 45.24a 7938.9b 17905.99b 0.44d
T1 381.3b 43.55d 44.79ab 7438.3c 15202.76d 0.48a
T2 386.3b 41.24f 44.49b 7088.4d 14265.5de 0.48a
扬辐麦4
YFM4 CK 417.0a 49.58a 41.22c 8521.6a 20521.07a 0.42e
T1 413.7a 47.55b 40.60cd 7983.5b 17543.15b 0.46b
T2 420.7a 42.41e 40.43d 7213.3cd 16014.36bc 0.45c
F-value Fc 89.8** 227.5** 511.4** 46.21** 413.34** 87.95**
FT 1.0 278.8** 6.3* 102.9** 136.47** 102.42**
Fc* FT 0.044 21.670** 0.096 5.707* 19.84** 1.9
注:各列数据后不同字母表示在0.05水平差异显著;*和**分别表示在P=0.05和P=0.01水平上差异显著。下同。
Note: Values followed by the different letter within a column are significantly different at P<0.05; * and ** indicate significance at P = 0.05 and P = 0.01 respectively. The same as below。
2.2生长速率
花前遮阴处理对小麦的生长速率有显著影响(表2),且 T2处理(拔节至开花50%遮阴)的影响显著大于T1处理(拔节至开花30%遮阴)。扬幅麦4号干物质积累量较扬麦158大。遮阴对于扬辐麦4生长速率的影响大于扬麦158。
表2 花前遮阴对小麦干物质积累和生长速率的影响
Table2 Effects of pre-anthesis shading on wheat growth rate
品种
Cultivar 处理
Treatment 拔节至孕穗 孕穗至开花 开花至成熟
Jointing to booting Booting to anthesis Anthesis to maturity
积累量 生长速率 积累量 生长速率 积累量 生长速率
DMA Growth rate DMA Growth rate DMA Growth rate
(g m-2) (g m-2d-1) (g m-2) (g m-2d-1) (g m-2) (g m-2d-1)
扬麦158 CK 478.70a 17.73a 319.91c 19.99c 596.38b 15.75bc 花前遮阴对小麦光合特性和产量形成的影响(3):http://www.751com.cn/shengwu/lunwen_22861.html