覆膜旱作对水稻生长发育及某些生理特性的影响

Effect of film mulched cultivation on growth and some physiological characteristics of rice.

在田间条件下研究了覆膜旱作和常规水作对水稻生长发育及生理特性的影响.结果表明,覆膜旱作稻比常规水作稻分蘖快且多,最高分蘖数可提高168%,差异极显著.覆膜旱作稻根系具有较高氧化力、还原力及硝酸还原酶活性,与常规水作稻间差异均达显著水平.覆膜旱作稻产量可高达8164kg/hm2,常规水作稻产量为7846kg/hm2,增产幅度3.4%～11.9%,有效穗数的增加是其产量提高的重要原因.

Growth response and some physiological characteristics of rice were investigated for plastic film mulched rice and conventional flooded rice in field condition The results showed that filmmulched rice plants tillered much rapidly and profusely, giving rise to 168% more tillers as compared to floodingcultivated rice plants, which was very significant difference Filmmulching let to significantly higher nitrate reductase (NR) activity as well as enhanced oxidizing power and nitrate reducase activity of rice roots. Yield of filmmulched rice reached 8 164 kg/hm2, that is a 34%119% increase compared with 7 846 kg/hm2 for flooded riceThis increase was mainly due to the increase in amount of productive panicles