东北苏打盐碱地生态渔业模式研究

Eco-fishery model in soda saline-alkaline land of northeast China

试验结果表明 ,东北苏打盐碱地实施鱼 稻 苇 蒲生态渔业模式效益显著 ,平均单产水稻为 6 0 2 4 .2kg/hm2 、芦苇 8336 .2kg/hm2 和蒲草 7387.6kg/hm2 ;平均鱼产量稻田养鱼为 912 .1kg/hm2 、蒲塘养鱼 35 37kg/hm2 和苇塘养鱼2 76 6kg/hm2 ;平均净收入 5 6 6 7.1元 /hm2 ,产投比为 2 .0 74。 1个生长期节水 1.9万m3 /hm2 ,节约化肥 2 90kg/hm2 ,降低土壤盐分 5 0 7kg/hm2 。

The experiments show that eco-fishery pattern of fish-rice-reed-cattail in soda saline-alkaline land of northeast China has a significant benefit.The average yields of rice grain,reed and cattail are 6024.2kg/hm^2,8336.2kg/hm^2 and 7387.6kg/hm^2,respectively,and the average fish yields are 912.1kg/hm^2,3537kg/hm^2 and 2766kg/hm^2 in paddy fields, reed ponds and cattail ponds,respectively. The average net income is 5667.1 yuan(RMB)/hm^2 and the ratio of output and input is 2.074 in the experimental area.19000m^3/hm^2 of water and 290kg/hm^2 of chemical fertilizer can be saved,respectively,and the total amount of the salinity of 507kg/hm^2 has been cut down at a growth period.