Effects of super absorbent polymer application rate on soil nitrogen of spring-sown naked oat in two irrigation systems

doi:10.11686/cyxb20140241

Abstract

Abstract: The present study, was a split plot field experiment to investigate the variation of soil nitrogen of spring-sown naked oat (Avena nuda) under two irrigation systems (traditional irrigation and drip irrigation) and four levels of super absorbent polymer (0, 30, 60 and 90 kg/ha). With an increase of the amount of super absorbent polymer, the content of soil total nitrogen, soil nitrate nitrogen and ammonium nitrogen initially increased but then decreased. The contents of soil total nitrogen, soil nitrate nitrogen and ammonium nitrogen reached their highest levels when SAP application was 60 kg/ha, and the contents under drip irrigation were higher than under traditional irrigation with the same levels of super absorbent polymer. Traditional irrigation caused soil nitrate to leach down, but was not conducive to absorption of nitrogen while an appropriate irrigation quota of drip irrigation (spring-sown was 140 mm) was beneficial for increasing soil tilth nitrogen.

CLC Number:

WU Na, HU Yue-gao, REN Chang-zhong, LIU Ji-li. Effects of super absorbent polymer application rate on soil nitrogen of spring-sown naked oat in two irrigation systems[J]. Acta Prataculturae Sinica, 2014, 23(2): 346-351.

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