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Optimal Experiments on the Field Cultivation of Chinese Isatis Indigotica Fort.

KE Shao-ying1,LIU Dong-lian2,MA Zuo-dong1,LIU Qing-hai3 (1.Department of Biology,Tangshan Teachers College,Tangshan 06 3000,China; 2.Department of Chemistry,Tangshan Teachers College,Tangshan 063000,China; 3.Hebei Chinese Medicine Science and Technology Developme nt Co.Led,Tangshan 063000,China)  
The optimal sowing time,plant density and harvest time o f Chinese Isatis indigotica Fort were studied.The results showed that the optimal sowing time was from Apr.15 to 25 in Yutian county of Hebei province .The optimal space was 10~20 cm between plants,and 30 cm between rows.The optima l harvest time was from Oct. 15 to 20.
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