论文部分内容阅读
以9311为材料,对水稻垄作和传统耕作方式下的光合特性、根系特点和主要农艺性状进行了比较研究。结果表明,与传统耕作方式相比,垄作方式下水稻的光合速率(PN)、气孔导度(gs)和水分利用率(WUE)等光合参数的值均显著增大,根条数、根干重、根系活力和根系CAT、SOD、POD酶活性极显著提高,MDA含量极显著下降,分蘖数和有效穗数分别增加16.67%和33.98%。垄作主要通过改善根系吸收、增加分蘖和有效穗数及提高光合速率,达到增产的目的。
Taking 9311 as material, the photosynthetic characteristics, root traits and major agronomic traits of paddy and conventional tillage were compared. The results showed that the photosynthetic parameters such as photosynthetic rate (PN), stomatal conductance (Gs) and water use efficiency (WUE) of rice increased significantly under the ridge-furrow mode, The activity of CAT, SOD and POD in roots, roots and roots were significantly increased while the content of MDA was significantly decreased. The number of tillers and effective panicles increased by 16.67% and 33.98% respectively. Ridge mainly through the improvement of root absorption, increased tillering and effective panicles and increase photosynthetic rate, to achieve the purpose of yield.