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以通禾833和通禾838为试材,研究不同氮素水平下株行距配置对吉林稻区水稻生长发育、光合及物质生产能力的影响。结果表明,株行距配置式对水稻各阶段株高影响不明显;株行距配置(A)(22.3 cm×22.3 cm)群体条件下水稻叶龄进程加快,有利于促进水稻生育进程和籽粒充实;株行距配置(A)在促进水稻分蘖和增加有效分蘖数上具有一定优势;同时,株行距配置(A)有利于叶面积指数、叶片光合速率、物质生产能力及稻谷产量的提高,分蘖数的增加和光合速率增强是株行距配置(A)物质生产能力和稻谷产量提升的主因。
Tonghe 833 and Tonghe 838 were used as experimental materials to study the effects of plant spacing on rice growth, photosynthesis and material productivity under different nitrogen levels. The results showed that there was no obvious effect on the plant height of rice at each stage of plant height and row spacing. The leaf age of rice was accelerated under the condition of 22.3 cm × 22.3 cm in plant spacing (A) (22.3 cm × 22.3 cm), which was beneficial to the growth process and grain filling of rice. Row spacing configuration (A) had some advantages in promoting tillering of rice and increasing effective tiller number. Meanwhile, the row spacing configuration (A) was beneficial to the increase of leaf area index, leaf photosynthetic rate, material productivity and paddy yield, tillering number And photosynthesis rate is the allocation of spacing (A) material production capacity and increase the main reason for rice production.