文献类型： 外文期刊

第一作者： Zhang, S. M.

作者： Zhang, S. M.

作者机构：

关键词： dry matter yield; harvest index; P harvest index; phosphorus concentration; genotypic variation

期刊名称：APPLIED ECOLOGY AND ENVIRONMENTAL RESEARCH （ 影响因子：0.7； 五年影响因子：0.9 ）

ISSN： 1589-1623

年卷期： 2023 年 21 卷 2 期

页码：

收录情况： SCI

摘要： Improving maize phosphorus use efficiency (PUE) through phosphorus uptake and utilization efficiency (PUPE and PUTE) is one of the effective ways to breed and increase yield in maize. The purpose of this study was to evaluate the effects of different maize genotypes and phosphorus supply on PUE, PUPE, PUTE and related traits under drip irrigation conditions, and to classify them according to PUE. The experiment was conducted at Dianba Town, Changji City in Xinjiang Province, northwest of China. In the experiment, treatments were the factorial combination of 22 genotypes of maize and two P fertilization rates (0 and 120 kg P ha(-1 )-P and +P, respectively). On average, total dry matter, P concentrations and P uptakes were reduced 23.01, 6.31 and 29.45% by -P, respectively. On the contrary, P increased PUTE, PUPE, and thus also PUE. All traits were influenced by genotype, phosphorus application and their interaction (P < 0.05). PUE was highly correlated with grain yield, total dry matter, P uptake and PUPE but not with PUTE. Genotypes from Xianyu1679 and Xianyu1111 were among the best in terms of PUE under -P and +P treatment. In a wide range of genotypes, PUPE contributes more than PUTE to determining PUE.

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