Effects of nitrogen and silicon applications on the growth and yield of rice and soil fertility

Abstract

Abstract: Field experiments were conducted to investigate the effects of nitrogen (N) application combined with silicon (Si) on the yield and growth of rice and soil nutrient status.The results showed that either nitrogen or silicon application could increase the yield and growth of rice,with the effect of nitrogen being better than that of silicon.Compared to nitrogen or silicon fertilization,the combined application could significantly increase the effective ear number per plant,filled grain number per ear,1000-grain weight,green-leaf number and yield at mature stage.The ratio of N to Si was significantly declined with the increase of silicon fertilizer during mature stage.Combined application of nitrogen with silicon could increase soil available nitrogen and silicon contents,decrease soil available potassium content,but had no significant effects on soil available phosphorus,organic matter,pHvalue and total nitrogen.

Key words: Zooplankton, Changjiang Estuary, Tide

CLC Number:

S143.7+9

GUO Bin, LOU Yunsheng, LIANG Yongchao, ZHANG Jie, HUA Haixia, XI Yunlong. Effects of nitrogen and silicon applications on the growth and yield of rice and soil fertility[J]. cje, 2004, (6): 33-36.

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