Effect of Bast Fiber Film and Seedling Fertilizer Application Methods on Quality of Machine-transplanted Rice Seedling

doi:10.7668/hbnxb.2016.01.031

Abstract

Abstract: The bast fiber film machine-transplanted rice seedling raising technology was generalized in China and favorable effect was obtained.To explore the feasibility of integrating applying bast fiber film with sprinkling seedling fertilizer under the bottom of seedling soil for raising machine-transplanted rice seedling,and further improve the bast fiber film machine-transplanted rice seedling raising technology,the featuring,dry weight,root activity,soluble sugar and nitrate-N content,rooting ability of wet seedbed rice seedling under different raising methods (raising seedling without bast fiber film,raising seedling with bast fiber film matting on the bottom surface of seedling tray) and different seedling fertilizer application methods(100% mixed in the seedling soil,50% mixed in the seedling soil+50% sprinkled under the bottom of seedling soil,100% sprinkled under the bottom of seedling soil) were carefully investigated.The results showed that rice seedling quality was significantly improved when raised with bast fiber film matting on the bottom surface of seedling tray,compared to that raised without bast fiber film,higher ratio of root to shoot,root activity,soluble sugar content and rooting ability were found in these seedlings.Sprinkling seedling fertilizer under the bottom of seedling soil could increase the dry weight of rice seedling root as well as the ratio of root to shoot,and increase the soluble sugar content of rice seedling while decrease its nitrate-N content.With increasing ratio of sprinkled seedling fertilizer(from 100% mixed in the seedling soil to 100% sprinkled under the bottom of seedling soil),the root dry weight of rice seedling raised without bast fiber film increased by 69.2%,ratio of root to shoot increased by 60.3%,soluble sugar content increased by 38.6%,nitrate-N content decreased by 8.2%,meanwhile,the root dry weight of rice seedling raised with bast fiber film increased by 6.8%,ratio of root to shoot increased by 2.6%,soluble sugar content increased by 41.3%,nitrate-N content decreased by 7.8%.Rice seedling root activity and rooting ability simultaneously got their peak value in the seedling fertilizer application methods of 50% mixed in the seedling soil+50% sprinkled under the bottom of seedling soil.This study showed that compared to mixing in the seedling soil,applying seedling fertilizer at the bottom of seedling soil could significantly improve rice seedling quality,and it could be perfectly integrated with the bast fiber film for machine-transplanted rice seedling raising.

Key words: Rice, Bast fiber film, Machine-transplanted rice seedling, Seedling fertilizer, Localised fertilization application

CLC Number:

S143
S511.01

ZHOU Wanlai, WANG Chaoyun, YI Yongjian, LIU Qian, WANG Hongying, TAN Zhijian. Effect of Bast Fiber Film and Seedling Fertilizer Application Methods on Quality of Machine-transplanted Rice Seedling[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2016, 31(1): 191-197. doi: 10.7668/hbnxb.2016.01.031.

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