摘要
根据西北黄土高原日较差大、径流多、土壤蓄墒力强和以旱农为主的特点,综合已有的多种研究成果。提出了包括太阳辐射、昼、夜平均温度,有效降水和休闲期蓄墒等主要影响因素的旱地作物生产潜力估算公式。经陕甘宁三省(区)15县(市)冬小麦生产潜力的试算,并与国内使用较多的6个作物生产潜力估算公式进行了比较和统计分析。证明本公式比较切合西北黄土高原的生产实际。
Based on the great temperature diurnal range,more runoff,good soil ability to storemoisture and other reseanch results in close connection with dryland farming,the formu-la was suggested to estimate productive potentiality of winter wheat including such con-straints affecting dryland crop productive potentiality as solar radiation,mean diurnaltemperature,available rainfall and moisture storage in the fallow periods.The formula isused to estimate the productive potentiality of winter wheat in 15 counties(municipalities)in Shaanxi,Gansu and Ningxia,and it is also compared with other for-mulas used in the country to estimate the productive potentiality of 6 kinds of crops.It issubjected to statistical analysis.The formula is proven to be suitable to the practical pro-duction on the Loess Plateau in northwest China.
出处
《干旱地区农业研究》
CSCD
北大核心
1990年第2期46-54,共9页
Agricultural Research in the Arid Areas
