Study on the Application of ABT2 Rooting Powder in Air Layering of Litchi chinensis
CHEN Ping et al(College of Horticulture and Landscape,Hainan University,Danzhou,Hainan 571737)
[Objective] The purpose was to analyze the correlation between the concn.of ABT2 rooting powder and rooting quality of Litchi chinensis layering so as to provide basis for the production of L.chinensis seedlings by air layering.[Method] The band girdle openings of L.chinensis layering were smeared with ABT2 rooting powder solution at 1 000,1 500 and 2 000 mg/kg(B1,B2 and B3) and the contrast blank group was set up to conduct comparative experiment.[Result] The rooting number had extremely significant difference between B1 and CK,B2,B3 and no significant difference between B2,B3 and CK.The maximum root length had extremely significant difference between B1,B2 and CK,between B1 and B3.The average root length had a extremely significant difference between B1 and CK,B3,between B2 and CK and a significant difference between B2 and B3.The root thickness had extremely significant difference between B1,B2 and CK and no significant difference between B1 and B2.The rooting velocity of B1 was faster than that of B2 and B3.[Conclusion] In the experimental concn.range,the air layering of L.chinensis treated with 1 000 mg/kg ABT2 rooting powder rooted fast and the quality of the layering root was significantly enhanced.
【CateGory Index】： S667.1