Water requirements of greenhouse grown pepper under drip irrigation

被引:10
作者
Chartzoulakis, K [1 ]
Drosos, N [1 ]
机构
[1] NAGREF, Subtrop Plants & Olive Tree Inst, Chania 73100, Crete, Greece
来源
SECOND INTERNATIONAL SYMPOSIUM ON IRRIGATION OF HORTICULTURAL CROPS, VOLS 1 AND 2 | 1997年 / 449期
关键词
evapotranspiration; growth; ETm/Epan ratio; Capsicum annum L;
D O I
10.17660/ActaHortic.1997.449.23
中图分类号
S3 [农学(农艺学)];
学科分类号
0901 ;
摘要
The water consumptive use of pepper, hyb. Sonar, grown in unheated greenhouse was determined using tensiometers. The maximum evapotranspiration (ETm), when soil water potential was maintained at values higher than -20 kPa, ranged from 0.5 to 4.0 mm day(-1), with a whole season irrigation requirement corresponding to 348 mm. Water amount equal to 0.85xETm had no effect on plant growth and fruit yield, which was 4.4 kg per plant; with water application of 0.65xETm and 0.40xETm plant growth declined and the total yield was reduced by 26% and 47% respectively. Both fruit number per plant and fruit size were affected by the amount of water applied. The crop ETm in October (at planting) was 0.2 of "A" pan evaporation (Epan) located outside the greenhouse. This value remained constant until February and then increased gradually to 0.7xEpan at the end of the experiment, in May.
引用
收藏
页码:175 / 180
页数:6
相关论文
empty
未找到相关数据