zhonggang No.11 Chinese cabbage.

Varity source and spread:It is bred by China Agricutlure Center institute at 1987.Now is spread at North and West China.
 
Characterict:Plant about 45cm by 50cm,outer leaves is 14-17 pcs,dark green,smooth leave,light green ball ,almost round,about 13cm by 12cm,tide ball ,about 5-6.5cm,solo weight abut 750-900g .

 
Feature:Mainly suitable at North China plant at spring,early mature,transplant to harvest 50 days.Good resisnat to cold ability,not easy to bolting,tender soft ball ,good quality.
               
Culitivate point:Normally plant to Dec to Jan. at North China,trsplant at Mar.-Apr.,harvest  at May,distance about 40cm by 33cm,about 67500 plants per hm2,can reach 45000-52500 kg per hm2.To process early mature can cover mulch.