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《宁夏农学院学报》 1989-02
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STUDIES ON LAW OF TlLLERING AND FORMING SPIKE OF DUAL RIDGE BARLEY

Yang Hansen  
In 1986-1988, the main cultivars of dual ridge barley h-ave been stueied in Yellow river irrigation area of Ningxia.The laws of change trands and forming spike of cultivars (different types, ear-ly, middle and late ripe) have bccn elaborated.The fesult shows: the different cultivar of dual ridge barley qlanting in rellow River irrigati-on area of Ningxia possess the strong tillering characteristics, high fate of forming sqike and it was effected by cultivating condition, less num-ber of grains per spike, lodging frequently in the ecological condition of Ningxia. Finally, it was also qut forward there must be certain nu-mber of spike per mu in order to high yield. The cultivars of strong ti-ller abili.ty and high rate of forming ear are selected, adopting the way not only pay attention to main stem but also tiller, appropriate rare pl-anting, to qromote tillering, to increase the number of ear in ouder to achieve high yield.
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