Effect of Nitrogen and Potassium Nutrition on Carbon and Nitrogen Metabolism at Late Growi

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Effect of Nitrogen and Potassium Nutrition on Carbon and Nitrogen Metabolism at Late Growing Stage and Grain Yield Formation in Spring Maize

佚名

【期刊名称】《农业科学学报（英文版）》【年(卷),期】2000(000)001

【摘要】Study on the relationship between grain yield formation and metabolism of carbon and nitrogen as influenced by N and K nutrition level during maturation was carried out through field experiments and biochemistry analyses. The results confirmed that it was necessary to maintain a higher photosynthetic capacity of leaves and abundant N supplies for root at late growing stages. The soluble protein content, RuBPC and PEPC activities in leaves, harvest index(HI) and harvest index of nitrogen (HIN)increased obviously with appropriate N and K application rate, which accelerated C and N translocation from vegetative parts to grain, enhanced photosynthetic capacity of leaves and abundant(but not excessive)N supply for root during late growing period.

【总页数】9页(105-113)

【关键词】N and K nutrition;Spring maize;Carbon and nitrogen metabolism;Grain filling 【作者】佚名

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