1 材料与方法
1.1 材料
1.2 方法
1.3 数据处理
2 结果与分析
2.1 三熟制模式对早稻返青、缓苗期的影响
表1 不同三熟制模式下早稻返青期、缓苗期Tab. 1 Returning green stage and slow seedling stage of early rice in different triple cropping systems |
| 处理 Treatment | 返青期 Returning green stage/d | 缓苗期 Slow seedling stage/d |
|---|---|---|
| 冬闲+早稻+晚稻 | 5 | 10 |
| 绿肥+早稻+晚稻 | 7 | 11 |
| 油菜+早稻+晚稻 | 7 | 12 |
| 马铃薯+早稻+晚稻 | 8 | 13 |
2.2 三熟制模式对早稻返青缓苗期植株生长的影响
图1 不同三熟制模式下早稻返青期、缓苗期的水稻株高(A)、叶龄(B)、叶片SPAD值(C)、根系干重(D)、茎叶干重(E)、植株干重(F)Fig. 1 Plant height (A), leaf age (B), leaf SPAD value (C), dry matter of roots (D), dry matter above ground (E) and plant dry matter (F) of returning green stage and slow seedling stage of early rice in different triple cropping systems |
2.3 三熟制模式对早稻植株根冠比的影响
2.4 三熟制模式对早稻返青期前、后水稻生长速率的影响
图3 不同三熟制模式下的早稻返青期前、后株高增长速率(A)、根系干重积累速率(B)、茎叶干重积累速率(C)、植株干重积累速率(D)Fig. 3 Plant height growth rate (A), root dry matter accumulation rate (B), dry matter accumulation rate of rice plant above ground (C) and plant dry matterr accumulation rate (D) before and after rice of returning green stage in different triple cropping systems |
