高垄与覆膜方式对盐碱地棉花生长发育的影响

Effect of High-Ridge and Plastic Film Mulching Modes to the Growth and Development of Cotton in Saline-alkali Soil

以中棉所79为材料探讨了高垄、覆膜、喷洒盐碱地土壤改良剂三项栽培措施对盐碱地棉花干物质积累及氮、磷、钾养分吸收分配的影响。结果表明:三项措施均可在一定程度上提高产量,其中以喷洒盐碱地土壤改良剂和三项措施结合应用两处理的籽棉产量显著高于对照(正常直播覆膜)。进一步分析表明,三项措施对盐碱地均可改善棉花纤维品质、提高棉花前期株高、增加真叶数量、促进棉花早发,从而提高后期现蕾和成铃强度获得高产。

This study was took to investigate the effects of different planting patterns （high ridge with mulching, high ridge without mulching, spraying soil improvement agent in saline - alkali soil, spraying soil improvement agent with high - ridge and mulching, spraying soil improvement agent with high - ridge and non - mulching, and traditional shallow seeding under mulching as the control）, on yield and oxidative damage in cotton leaves in saline fields by using Zhongmian79 as mate- rial and setting six planting patterns. The results showed that compared with the control, all treatments in this study increased the yield. The yields for the treatment of spraying soil improvement agent in saline - alkali soil and the treatment of spraying Soil improvement agent with high - ridge and mulching, 3735.9 Kg/hm2and 3642.6 Kg/hm2 respectively, were significant higher than that for the control. The further analysis showed that different planting modes can impove the fiber quality of saline cotton, enhanced the plant height of early cotton, increased the number of leaf, promoted the early- onset of cotton, thereby increased the strength of later budding and boll to obtain high yield.