Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2013, Vol. 29 ›› Issue (6): 59-62.doi: 10.11924/j.issn.1000-6850.2012-1757

Special Issue: 玉米 农业气象

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Effects of Polyaspartic Acid (PASP) and Water-retention Agent on the Growth in Maize (Zea mays L.) at Seedling Stage Under Water Deficit Condition

  

  • Received:2012-05-08 Revised:2012-07-01 Online:2013-02-25 Published:2013-02-25

Abstract: Pot experiment was conducted to study the effects of polyaspartic acid (PASP) and water-retention agent on growth in maize at seedling stage under water controlled condition. The results were as following: under soil water stress condition, water-retention agent and PASP indeed promoted the growth of plant root, photosynthesis and dry matter accumulation. Compared with waters stress treatment, water-retention agent and PASP treatments induced to the increase of root length by 18.2% and 8.3%, the number of side root by 26.3 %, 14.8%, the photosynthesis by 6.6%, 1.4%, and the dry matter by 33.8% and 12.2%, respectively, however, there was no obvious effect of PASP on root vigor under water stress condition, neither for the water-retention agent.