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Effects of different P applications on inorganic P components in irrigated sierozems under maize-chickpea intercropping

The dosage effects of phosphorous applications on yield of maize and chickpea under mono-cropping and intercropping systems were investigated using Jiang-Gu inorganic phosphorus fractionation method in irrigated sierozems in the Gansu Yellow River Irrigation District.

The results showed that the contents of inorganic phosphorus were in the following order: OP > Ca10-P > Ca8-P > Al-P > Fe-P > Ca2-P. With the increased uses of phosphate fertilizer, the contents of Ca2-P, Ca8-P, Al-P and Fe-P increased significantly, whereas the contents of O-P and Ca10-P did not show apparent changes. The inorganic P contents looked similar between mono-cropped and intercropped chickpeas, but lower in intercropped maize than mono-cropped one. Particularly, it was found that the Al-P at P40 level (P application rate of 40 kg·ha-2), Fe-P at P0 (no P application) level, and Ca10-P at P80 level (80 kg P·ha-2) of intercropped maize were significantly lower than those of mono-cropped one.

Title of publication: Agricultural Research in the Arid Areas
Volumen: 33
N.0: 1
ISSN: 1000-7601
Intervalo de páginas: 85-90
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Año: 2015
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País(es): China
Cobertura geográfica: Asia y el Pacífico
Idioma utilizado para los contenidos: Chinese (Traditional)
Author: CHAI Bo , LI Long, YANG Si-cun, CHEN Ying, WANG Cheng-bao, JIANG Wan-li
Tipo: artículo de revista
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