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RELATED PARTY BALANCES AND TRANSACTIONS - Transactions with related parties (Details ) - CNY (¥)
¥ in Thousands
12 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2018
Related Party Transaction, Amounts of Transaction ¥ 15,927 ¥ 37,987 ¥ 7,848
Revenue from Related Parties 15,927 37,987 7,848
Purchases [Member]      
Related Party Transaction, Amounts of Transaction 17,450    
Linze Origin Seeds Ltd [Member]      
Related Party Transaction, Amounts of Transaction 0 83 45
Linze Origin Seeds Ltd [Member] | Purchases [Member]      
Related Party Transaction, Amounts of Transaction 3,416    
Beijing Shihui [Member]      
Related Party Transaction, Amounts of Transaction 0 20,823 1,575
Denong [Member] | Purchases [Member]      
Related Party Transaction, Amounts of Transaction 166    
Ying De [Member]      
Related Party Transaction, Amounts of Transaction 5,315    
Ying De [Member] | Purchases [Member]      
Related Party Transaction, Amounts of Transaction 10,975    
Close family of the Company's Chairman [Member] | Purchases [Member]      
Related Party Transaction, Amounts of Transaction 32    
NCI [Member]      
Related Party Transaction, Amounts of Transaction 10,612 ¥ 17,081  
NCI [Member] | Purchases [Member]      
Related Party Transaction, Amounts of Transaction 2,861    
Zhengzhou Branch [Member]      
Related Party Transaction, Amounts of Transaction ¥ 0   ¥ 7,803