硫酸锌对盐碱地水稻穗部性状及产量的影响

为明确硫酸锌不同施用量对垦鉴稻5号穗部性状及产量的影响,采取单因素随机区组设计进行试验研究。结果表明:在土壤有效锌含量0.1 ug·kg-1的盐碱土条件下,各处理的穗长、不同粒位的实粒数、实粒重、穗数、千粒重及产量均高于对照,其中施入30 kg·hm-2硫酸锌时的穗长、不同粒位的实粒重、下部一、二次枝梗数、千粒重及产量与对照间的差异达到了显著或极显著水平,且产量较对照增产达65.5%。穗长与二次枝梗数、千粒重呈极显著正相关,千粒重、穗数与产量的相关系数接近显著水平。可见,盐碱地种稻施用硫酸锌是十分必要的,试验条件下以30 kg·hm-2七水合硫酸锌增产效果最佳。

Effect of Zinc Sulfate on Rice Panicle Traits and Yield in Saline Soils

Single-factor randomized block design experiments were conducted to confirm the effect of the different application quantities of zinc sulfate on spike feature and yield of Kenjiandao 5. The results showed that the different treatment of panicle length,the number of filled grains,the grain weight,spike number per plant,1000-grain weight and yield of the different grain positions were higher than those of the control under saline alkali soil of the available zinc content 0.1 ug·kg^-1.The difference between the application zinc sulfate 30 kg·hm^-2of length,filled grain weight of different grain positions,primary branches and second rachis-branches number of per panicle,1000-grain weight and yield and the comparative group reached significant or extremely significant level. The yield increased 65.5% to comparison. The panicle length and secondary branches number,1000-grain weight was extremely positive correlation. The related coefficient of 1000-grain weight,panicle number and yield was closed to the significant level. The application of zinc sulfate was very necessary in saline alkali soil,and the increasing yield effect of 30 kg·hm^-2zinc sulfate was the best.