摘要
[Objective] The aim was to explain the accumulation characteristic of mineral elements in alpine grassland plants and the effect of supplementary supply on the nutrient changes of mineral elements. [Method]Potted Poa crymophila cv. Qinghai plants were regularly applied with liquid mineral mixed fertilizers,and samples were collected for analysis and detection. [Result] After the regular spraying of liquid mineral mixed fertilizers,the mineral elements in potted P. crymophila and its soil reduced( P < 0. 05),but the accumulation of corresponding mineral elements of P. crymophila in the control group was increased due to the " Starvation Effect",which was one of the endogenetic forces driving the increase in the accumulation of mineral elements. [Conclusion]This study is of great significance for the study of the accumulation of mineral elements in degraded grassland plants and its dynamic mechanism,as well as testing the hypothesis of the Starvation Effect of mineral elements. In addition,it also provides scientific bases and technical support for the restoration and remediation of degraded grassland and the development of ecological livestock husbandry.
Objective] The aim was to explain the accumulation characteristic of mineral elements in alpine grassland plants and the effect of supplementary supply on the nutrient changes of mineral elements. [Method] Potted Poa crymophila cv. Qinghai plants were regularly applied with liquid mineral mixed fertilizers, and samples were collected for analysis and detection. [Result] After the regular spraying of liquid mineral mixed fertilizers, the mineral elements in potted P. crymophila and its soil reduced （ P 〈0.05）, but the accumulation of corresponding mineral elements of P. crymophila in the control group was increased due to the ＂Starvation Effect＂, which was one of the endogenetic forces driving the increase in the accumulation of mineral elements. [Conclusion] This study is of great significance for the study of the accumulation of mineral elements in degraded grassland plants and its dynamic mechanism, as well as testing the hypothesis of the Starvation Effect of mineral elements. In addition, it also provides scientific bases and technical support for the restoration and remediation of degraded grassland and the development of ecological livestock husbandry.
基金
Supported by the General Program of Natural Science Foundation of Qinghai Province(2016-ZJ-906)
关键词
矿物质元素
POA
液体
化肥
混合
喷洒
累积特征
草地植物
Potted Poa crymophila cv. Qinghai
Mineral element
Accumulation
Liquid mixed fertilizers
