摘要
用回归等值线法对晋南黄土高原丘陵旱地小麦在同一自然条件下干旱年、常年、丰水年3个降水年型土壤水分变化规律进行了模拟分析研究,结果表明,由回归等值线所形成的各年型土壤水分的“峰”、“脊”、“坡”、“鞍”各具特点,凋萎值区域大小、等值线数值等也存在差异,形成了不同年型土壤水分变化规律和产量差异。
The space-time dynamics of soil water of dryland wheat are analysed under same natural conditions in three different annual rainfall conditions (wet year,normal year and dry year) by using regression isogram method. The results show that the soil water 'peak', 'ridge','slope' and 'saddle' formed by regression isogram had different characters under different annual rainfall conditions, and there are also difference among the zones of wilt value and the isogram value. Then different soil water dynamics and wheat yields were formed under different rainfall conditions'.
出处
《生态农业研究》
CSCD
1997年第4期20-23,共4页
Chinese Journal of Eco-agriculture
基金
中英合作项目
关键词
早地小麦
降水年型
土壤水分动态
模拟研究
Dryland wheat,Type of annual rainfall,Soil water dynamics,Simulation study
