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分析了不同穗型不同行向水稻穗对行间的遮光时间、遮光部位及遮光长度,结果表明穗遮光时间在临界高度以上南北行向比东西行向长。对南北行向,穗遮光部位上午随时角的增加逐渐向下移动,东西行向在临界高度以上与南北行向趋势相似,在临界高度以下则随时角的增加先逐渐向下移动,而后又向上移动至临界高度。穗遮光长度在0至穗长之间。对比不同重量穗型可知,弯曲穗型穗对行间遮光影响小,对行内遮光影响大。
The time of shading, the position of shading and the shading length of rice panicle lines in different rows were analyzed. The results showed that panicle shading time was longer than the east-west line above the critical height. On the north-south direction, the ear shading part of the morning angle with the increase of the gradual move down the east-west line above the critical height and north-south trend is similar to the following below the critical height angle angle increases with the first move down gradually, and then up Move to critical height. Spike shading length 0 to spike length. Comparing different weight panicle types, it can be seen that curved ear panicles have little influence on inter-row shading, and have a great influence on intra-row shading.