Effect of Different Mulching Cultivation Methods on the Yield of Astragalus chinensis
In order to explore suitable transplanting methods for Astragalus in Yulin,this study set up four treat-ments,namely,ridge cultivation(QL),inter-membrane cultivation(MJ),double-monopoly furrow cultivation(SL),and open field cultivation(CK).The effects of CK,QL,MJ and SL on soil temperature,soil moisture con-tent,agronomic traits,dry matter quality and yield of Astragalus were studied.The results showed that about 5～20 cm soil temperature,MJ and QL were the same temperature during the greening period,which increased 0.25℃ and 1℃ than SL and CK,respectively,and the temperature of MJ during the flowering period decreased 0.75℃,2.63℃,and 0.125℃ compared with that of QL,SL,and CK,respectively;soil water content during the whole life span of 0～60 cm was 2%,2%,and 14%higher in MJ than that of QL,SL,and CK;plant height and crown width during the podding period were significantly higher in MJ than that in QL,SL,and CK.MJ was significantly higher than QL,SL and CK;stem thickness,MJ was significantly higher than CK,with no significant difference with QL and SL,and 0.22 mm and 0.71 mm thicker than QL and SL;about dry matter mass,MJ was significantly higher than the other three treatments;about primary root length,root fresh weight,root dry weight,and total root number,MJ was significantly higher than QL,SL and CK;MJ yield was significantly higher than SL and CK,with no significant difference with QL,and increased yield by 2%,20%and 18%compared with QL,SL and CK,respectively.In con-clusion,MJ is a suitable cultivation method for Astragalus in Yulin.
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