【摘要】 本试验根据黑龙江省不同气候和土壤肥力分布,采用统一试验方案,进行了11个县29个试验点的谷子自然生产力农业生态联合试验。在此基础上,运用双重组合设计原理,初步建立起该省谷子自然生产力的数学模型。更多还原

【Abstract】 According to the different distributions of climate and soil fertility in Heilongjiang Province, the agroecological combination experiments about natura1 yield capacity of millet were carried out on a uniform experimental plan, in 29 regions of 11 counties during 1985～1987. By means of the double combination designs, a mathematical model for the natural yield capacity of millet in Heilongjiang Province was established.更多还原