摘要
莱洲湾沿岸地区气候资源丰富，光温生产潜力很高，降水稳定度差，起到限制作用．用通径分析等求得本区与产量相关联的涝、丰、平、旱年需水指标，用以诊断各作物、各发育时段降水适宜性．小麦各发育时段受旱机率５０％以上，春作物大部生育期也在２０％～５０％，丰年机率低。
In the littoral area of the Laizhou Bay,a higher precipitation variability has restricted agricultural production,though having rich climatic resources and great light temperature potential productivity.The water requirement indices related with crops yield were obtained respectively in waterlogging,bumper harvest,normal and drought years by path analysis,to diagnose precipitation suitability in different growth durations for crops.The probability of drought is above 50% in growth durations for wheat and is 20%￣50% for spring crops,but it is lower in bumper harvest years,the irrigation agriculture must be developed in the area.
出处
《山东师范大学学报（自然科学版）》
CAS
1996年第3期48-52,共5页
Journal of Shandong Normal University(Natural Science)
基金
国家重点攻关课题
关键词
作物
水分诊断
光温水
生产潜力
需水指标
the littoral area of the Laizhou Bay
crop water diagnosis
light temperature precipitation potential productivity
water requirement index
