摘要
沙地果树采用水雾微喷灌较大水漫灌节水36.3%;0～20 cm、21～40 cm、41～60 cm土层的土壤容重,水雾微喷比大水漫灌分别降低5.5%、3.0%和1.2%,土壤总孔隙度分别增加8%、2.3%和9.5%;0～20 cm、21～40 cm、41～60 cm土层土壤持水量比大水漫灌分别增加10.9%、17.1%和15.4%;果园中午水雾微喷灌1h后,树下气温从30.7℃降到27.2℃,相对湿度从65.1%提高到75.6%;水雾微喷新梢生长量增加14.0%,树冠投影面积增加14.2%;水雾微喷灌,李子单产与单果重分别增加了22.5%和9.7%,可溶性固型物含量降低2.7%。水雾微喷改善了土壤物理性质,增加了土壤孔隙度,提高了各层土壤持水量,且地表不形成径流,土壤保水保肥作用明显增强。
Micro-spray irrigation could save 36.3% of water comparing with flooding irrigation of fruit tree growing on sandy soil. For 0-20cm, 21-40cm and 41-60cm layer, the soil bulk density of the micro-spray irri respectively 8 layer, the soil gation was 5.5%, 3.0% and 1.2% less than that of flooding irrigation, while the soil porosity was %, 2.3% and 9.5% higher, respectively. On the other hand, for 0-20cm, 21-40cm and 41-60cm water content of the micro-spray irrigation increased 10.9%, 17.1% and 15.4%. When trees 30.7℃ to 27.2℃, while the relative humidity increased from 65.1% to 75.6%. The newer branches＇ growth rate increased 14.0%, and canopy projection area enhanced 14.2% by micro-spray irrigation. The yield and single fruit weight of plum increased 22% and 9.7%, while soluble solid of fruit declined 2.7%. Therefore, micro-spray irrigation improved the soil physical properties, soil porosity and soil water content. Micro-spray irrigation avoided surface runoff and significantly enhanced the water and fertilizers conservation.
出处
《吉林农业科学》
CSCD
2009年第1期54-56,共3页
Journal of Jilin Agricultural Sciences
基金
科技部农业科技成果转化资金项目(03EFN216900279)
关键词
沙地
果树
水雾微喷
高效节水
Sandy soil
Fruit tree
Micro-spray irrigation
Water-saving
