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探明不同栽培方式水稻在翻耕和免耕条件下根系衰老状况以及子粒灌浆特性。以重穗型杂交稻Ⅱ优498为试验材料,测量根系伤流量并用原状土柱法挖根考察根干重,用Richard方程拟合宽窄行栽培、三角形强化栽培、宽行窄株栽培以及抛秧栽培在翻耕和免耕条件下的子粒灌浆过程并进行比较研究。与翻耕稻相比,免耕稻根量较小,但灌浆前、中期根系活力要高于前者,
The root aging and grain filling characteristics of different cultivation methods of rice under tillage and no tillage were investigated. The heavy panicle type hybrid rice, Ⅱyou 498, was used as experimental material to measure the root traumatic wound volume. The root dry weight was measured by using the original soil column method. The Richard equation was used to fit the narrow and narrow row cultivation, triangular cultivation, wide row and narrow row cultivation, The grain filling process under tillage and no tillage was compared and studied. Compared with tillage rice, the amount of no-tillage rice was small, but the root activity before and during grain filling was higher than the former,