不同装土量对玉米植株全量养分含量及吸收量的影响研究

以松辽平原玉米带黑土区现行耕作制度下产生的两种不同的剖面构型“波浪型”和“平面型”导致有效土量差异为背景,采用室外盆栽模拟实验,研究了不同装土量对苗期、抽雄期和成熟期玉米植株全氮、全磷、全钾含量以及吸收量的影响。结果表明：随装土量增加,苗期、抽雄期和成熟期玉米植株全量养分吸收量增加,并且全量养分含量苗期最高,随着时间的推移含量逐渐递减,苗期到抽雄期下降速率最快,而抽雄期以后降幅不大。

Effects of Different Soil Amounts on Total Nutrients Content and Nutrients Uptake Amounts of Maize Plant

This paper is based on the background of different effective soil amount resulting from two different sectional types "wave type" and "flat type" under the current cultivation system in the black soil of Songliao Plain maize belt.The tested soil is the medium-fertility black soil in the experiment station of Jilin agricultural university.The paper has studied the effects of different soil amount on the total nitrogen content,the total phosphorus content,the total potassium content and nutrients uptake amount of maize plant during the weeding stage,the heading stage and the maturity stage by the outdoor simulation pot experiment.The results was shown that the total nutrients of maize plant were increased with the increasing of packing soil amounts,however the total nutrients of maize plant reached to the highest value during the seeding stage,and they decreased gradually subsequently,and the rate of decreasing reached to the quickest during the stage from seeding to heading,but after heading stage,the decreasing rang is not significant.