杂卤石对玉米生长及养分吸收的影响研究
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山东省重点研发计划(2016CYJS05A02, 2017CXGC0306);山东省发展计划(2013GNC11309)。


Effect of polyhalite on corn growth and nutrient uptake
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    摘要:

    对杂卤石作为钾肥在玉米上施用的效果进行分析,以期为杂卤石应用于农业生产提供理论依据。通过盆栽试验研究了杂卤石对玉米生长及养分吸收的影响。各杂卤石处理分别较空白对照增产31.54%~63.14%,千粒重分别提高23.80%~47.15%,且差异均达显著水平。杂卤石处理的玉米产量分别较氯化钾、硫酸钾及硫酸钾镁处理提高22.17%~29.51%,千粒重分别提高7.67%~12.92%,差异均达显著水平。杂卤石能改善玉米对钾的吸收,各杂卤石处理玉米植株钾含量分别较空白对照增加21.79%~93.50%。适量施用杂卤石能促进玉米对钙的吸收,杂卤石用量为100 kg/hm2的处理玉米植株钙含量较空白对照增加52.7%,且杂卤石处理的玉米植株钙含量较3种传统钾肥处理提高了30.59%~50.37%。杂卤石能促进玉米对硫的吸收,各杂卤石处理玉米植株硫含量分别较空白对照增加了4.43%~52.22%。杂卤石用量与玉米植株钾、钙、硫含量及玉米产量均呈显著正相关关系,同时在杂卤石处理中玉米植株钾含量及钙含量与玉米产量均呈显著正相关关系。杂卤石能够提高玉米产量,促进玉米对钾及钙的吸收。

    Abstract:

    The effect of applying polyhalite as potash fertilizer on corn was analyzed in order to provide a theoretical basis for the polyhalite application in agricultural production.Pot experiments were conducted to study the effects of polyhalite on growth and nutrient uptake of corn.Polyhalite treatments,compared with control,increased corn yield by 31.54% to 63.14% and weight per thousand grains by 23.80% to 47.15%,and the differences all reached significant level.Corn yield and weight per thousand grains of polyhalite tretment was increased by 22.17% to 29.51% and 7.67% to 12.92% respectively,compared with those of KCl,K2SO4 and K2SO4(MgSO4) and the differences were all significant.Polyhalite improved corn potassium uptake,and the corn potassium of all the polyhalite treatments increased by 21.79% to 93.50% compared with that of control.Appropriate amount of polyhalite could promote calcium uptake of corn.Compared with control,corn calcium of 100 kg/hm2 polyhalite treatment increased by 52.7%.Corn calcium content of polyhalite treatment was higher than that of other three potassium fertilizer treatmens by 30.59% to 50.37%.Polyhalite promoted corn sulfur absorption and corn sulfur of polyhalite treatmens was increased by 4.43% to 52.22% respectively compared with that of the control.Significant positive correlations between corn potassium,calcium and sulfur content with amount of fertilizer applied and also significant positive correlations between corn potassium and calcium content with corn yield were found in the polyhalite treatments.Polyhalide can increase corn yield and promote corn′s absorption of potassium and calcium.

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王媛,李文庆*,赵丽娅,李晗灏.杂卤石对玉米生长及养分吸收的影响研究[J].中国土壤与肥料,2018,(6):166-173.

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  • 在线发布日期: 2018-12-19
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