Impact of water-saving superabsorbent polymer on oat (Avena spp.) yield and quality in an arid sandy soil

Scientific Research and Essays

M. Robiul Islam¹ 

关键词:  ;    Oat;    superabsorbent polymer;    forage quality;    drought stress;    arid environment;    Northern China.;   

DOI  :  10.5897/SRE10.476

学科分类：社会科学、人文和艺术（综合）

来源: Academic Journals

【 摘 要 】

Oat is a promising forage crop in arid northern China where low precipitation, land degradation and shortage of forage resources for animal production during winter have accentuated the need for alternative forage crops. Our objective was to determine the growth, biomass production and grain yield plus forage quality of oat (Avenaspp.) using different rates of superabsorbent polymer (0, 30, 60, 90 and 120 kg/ha) in an erosion-prone arid sandy soil with limited irrigation. Baiyan 7 (B7), a forage producing hulled oat (Avena sativaL.) and Baiyan 2 (B2), a dual purpose (grain and forage producing) naked oat (Avena nudaL.) were used. The above-ground biomass increased significantly (87.3%) in B7 and slightly (18.3%) in B2 with the application of superabsorbent polymer at 60 kg/ha. The below-ground biomass, grain yield and number of panicles as well as tiller fertility rate and relative water content were also increased significantly in B7 and slightly in B2 at the superabsorbent rate of 60 kg/ha. Weed interferences in the crop field had significant positive correlations with superabsorbent polymer rates and B2 was much more affected by weed than B7. Application of superabsorbent polymer also increased the relative feed value (RFV) in B7 and grain quality of B2. The optimum application of superabsorbent polymer in the study area would be 60 kg/ha. The B7 cultivar would be more competitive in efficiently utilizing water from the polymer for growth under water stress than B2.

【 授权许可】

CC BY