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EFFECTS OF NITROGEN AND DENSITY ON YIELD AND GRAIN QUALITY OF RICE

Zhou Pei

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Abstract

The effects of amount of nitrogen accumulated and density on yield and grain quality of rice were systematically studied with mid\|maturing rice Japonica 9516 and Indica Shanyou 63 in experimental farm of Yangzhou University. The results were as follows: proper amounts of N\|applied and row space with 9516 were 225 kg/hm 2 and 26.6 cm respectively, those of Shanyou 63 were 150 kg/hm 2 and 33.3 cm. These are proper conditions to increase ripe grain percentage and grain weight after heading stage, and can decrease the chalkiness and increase the protein content of grain, and can improve merching quality.

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What this paper is about

The effects of amount of nitrogen accumulated and density on yield and grain quality of rice were systematically studied with mid\|maturing rice Japonica 9516 and Indica Shanyou 63 in experimental farm of Yangzhou University. The results were as follows: proper amounts of N\|applied and row space with 9516 were 225 kg/hm 2 and 26.6 cm respectively, those of Shanyou 63 were 150 kg/hm 2 and 33.3 cm. These are proper conditions to increase ripe grain percentage and grain weight after heading stage, and can decrease the chalkiness and increase the protein content of grain, and can improve merching quality.

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Available abstract

The effects of amount of nitrogen accumulated and density on yield and grain quality of rice were systematically studied with mid\|maturing rice Japonica 9516 and Indica Shanyou 63 in experimental farm of Yangzhou University. The results were as follows: proper amounts of N\|applied and row space with 9516 were 225 kg/hm 2 and 26.6 cm respectively, those of Shanyou 63 were 150 kg/hm 2 and 33.3 cm. These are proper conditions to increase ripe grain percentage and grain weight after heading stage, and can decrease the chalkiness and increase the protein content of grain, and can improve merching quality.

Key concepts: Japonica rice, Nitrogen, Grain yield, Agronomy, Yield (engineering), Japonica, Grain quality, Mathematics

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