| Principal factors of horsebean production in Southern Ningxia |
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| DOI：10.7606/j.issn.1000-7601.2005.01.19 |
| Key Words: horsebean yield fertility principal factor analysis |
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| Abstract: |
| The principal factor analysis was used to analyze such ten factors affecting horsebean yield as water and fertilization and the analytical results demonstrated that soil moisture significantly and positively correlated with horsebean yield in the flowering and pod-forming periods. Readily available nitrogen and soil moistures before sowing and in the seedling period significantly and positively correlated with horsebean yield; nitrogen-water relation characterized the first principal factor. soil moisture weighted most heavily with its weighed coefficient reaching 0.925, thereby affecting horsebean yield most; nitrogen and organic matter could play the role that fertilizer use can improve water use, and thus 75~105 kg nitrogen should be applied. The second principal factor indicated the inverse responses of nitrogen and phosphorous to soil moisture, i.e. sufficient soil water made it easy for horsebean to take up nitrogen and phosphorus. |