Crop Cultivation & Genetic Breeding

 Effects of Organic-Inorganic Superabsorbent Polymer Composites on Soil Moisture and Growth of Maize at Seedling Stage

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  •  ( 1.College of A&F Engineering and Planning,Tongren University,Tongren 554300,China; 2.College of Resource and Environment Science,Shanxi Agricultural University,Taigu 030801,China; 3.Ningxiang Fengyu Biotechnology Co.Ltd.,Ningxiang 410600,China)

Received date: 2019-02-20

  Online published: 2019-10-15

Abstract

To provide some scientific basis for the reasonable application of organic-inorganic superabsorbent polymer composites in corn production in the semi-arid,arid areas of northern China,the effects of organic-inorganic superabsorbent polymer composites[polyacrylamide(PAM) ,attapulgite(NA),humic acid( FA) ,straw biochar(CB) ]on soil moisture and growth of maize seedling were studied with five treatments including T1 (PAM∶ NA∶ FA∶ CB =4∶ 3∶ 2∶ 1),T2 (PAM∶ NA∶ FA∶ CB =4∶ 3∶ 1∶ 2),T3 (PAM∶ NA∶ FA∶ CB =5∶ 2∶ 2∶ 1) ,T4 (PAM∶ NA∶ FA∶ CB =5∶ 2∶ 1∶ 2) and the control (CK) without organic-inorganic superabsorbent polymer composites.The results showed that all the composite treatments significantly decreased the cumulative evaporation rate of soil water compared with CK,the order was T4<T3<T2<T1<CK,and the cumulative evaporation rate of soil water decreased with the increase of application rate of organic-inorganic superabsorbent polymer composites.Soil moisture content,plant height,leaf area,stem diameter and dry matter accumulation of maize seedling were significantly higher than CK,and the order was T4>T3>T1>T2>CK.When the application rate of organic-inorganic superabsorbent polymer composites was 0.013—0.053 g/kg,the cumulative evaporation rate of soil water decreased,the soil moisture content increased with the increase of application rate of organic-inorganic superabsorbent polymer composites.When the application rate of organic-inorganic superabsorbent polymer composites was 0.053 g/kg,the growth of maize seedling was obviously promoted,and the plant height,leaf area,stem diameter and dry matter accumulation of maize seedling were the highest.These results suggested that the T4 treatment was a best way to reduce the cumulative evaporation of soil water,increase the soil moisture content,and promote the growth of corn seedling with the superabsorbert polymer composites of 0.053 g/kg.

Cite this article

YU Gao, CHEN Fen, XIE Yinghe, ZHAO Xiaodong, ZHENG Haixia, TAN Jiebin .  Effects of Organic-Inorganic Superabsorbent Polymer Composites on Soil Moisture and Growth of Maize at Seedling Stage[J]. Journal of Henan Agricultural Sciences, 2019 , 48(10) : 23 -29 . DOI: 10.15933/j.cnki.1004-3268.2019.10.004

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