Title: Evaluation and Present Situation of Fertilization for Rice in Hubei Province
Abstract: An investigation of nutrients management on rice was carried out in 2009 and 2010 in Hubei province,covering 1027 rice farmers from main product areas.Fertilization,yield and fertilizer use efficiency of rice at present were revealed and evaluated by comparing the investigation of nutrients management on rice in 2003 and 2004.The survey indicated that chemical fertilizer input showed an upward tendency,nitrogen fertilizers were applied in all rice paddies while organic fertilizer and micronutrient fertilizer were used by only a fraction of farmers.The average application of nitrogen,phosphorus,potassium fertilizer were 184.0,63.8 and 67.4 kg/hm2 respectively,the ratio of N∶P2O5∶K2O was 1∶0.35∶0.37.The application of nitrogen was excessive while that of potassium fertilizer was deficient.Phosphorus fertilizer application was deficient in late-rice but excessive in mid-rice.The ratio of organic and inorganic fertilizer was unbalanced.Nitrogen fertilizer was mostly applied as basal fertilizer or as basal and tillering fertilizer.Potassium fertilizer deficit or no application was universal.N∶P2O5∶K2O ratio and base/topdressing ratio were unbalanced.Unreasonable fertilization and improper placement methods caused low fertilizer use efficiency;and the rice yield remained to be further improved.Therefore,the establishment and promotion of optimal nutrient management and technology system was important for improving rice yield and nutrient use efficiency in Hubei.
Publication Year: 2012
Publication Date: 2012-01-01
Language: en
Type: article
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Cited By Count: 2
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