Corn Cultivars Yield Potential Variation under Different Nutrient Application and Its Significance for Breeding

doi:10.7668/hbnxb.2007.05.032

Abstract

Abstract: To discuss whether soil nutrient balance affects corn cultivars yield potentiality and study corn agronomical properties and yield potential variation and its significance for breeding, field experiments were conducted to provide evidence for corn breeding and regional test. 15 national regional test corn cultivars were planted in carbonate cinnamon soil as field experiment in Fenyang to study the effect of different nutrient application on corn yield potential variation. Results showed that regulative fertilization changed agronomical properties compared with conventional fertilization and increased significantly grain weight of one spike and grain yield. There was obviously difference for corn yield potentiality under different nutrient application and fertilizer balance, and balanced fertilization increased significantly yield potentiality for high nutrient potential cultivars. Soil nutrient and nutrient from application affected corn yield potentiality. Therefore, ecoadaptable cultivars should be chosen according to soil nutrient balance theory in corn high-yield breeding.

Key words: Corn, Cultivars, Nutrient application, Agronomical properties, Grain yield, Balanced fertilization

CLC Number:

S513.01

CHU Qing-he, WANG Cheng-ji, PAN Gen-xing, LIU Zhen-yu, REN Zhi-hua. Corn Cultivars Yield Potential Variation under Different Nutrient Application and Its Significance for Breeding[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2007, 22(5): 129-133. doi: 10.7668/hbnxb.2007.05.032.

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http://www.hbnxb.net/EN/Y2007/V22/I5/129

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