摘要
对4种沙丘定植沙生植物在移动式局部灌溉条件下的灌水间隔、灌水次数对植被的成活率、新稍直径、新稍长度等的影响进行了试验研究。结果表明:沙拐枣的成活率最高,梭梭的成活率最低,植被品种和灌水间隔对成活率、新稍直径、新稍长度的影响都极显著,而灌水次数仅对新稍直径的影响显著,对成活率和新稍长度的影响不显著。从节约用水考虑,该区域4种沙丘定植沙生植物局部灌溉的灌水次数可定为4～8次。
A localized irrigation experiment with traveling pipe was designed to study the effects of survival, diameter and length of fresh treetop of four psammophytics on interval of two irrigations and irrigations times. Results show that survival of Calligonuml is the highest, and Haloxylon ammodendron Bge is the lowest. The plant variety has significant effects on survival, diameter and length of fresh treetop, but interval has only significant effect on diameter of fresh treetop. The conclusion is that considering saving water, the irrigation times of this four psammophytics should be four to eight times under the localized irrigation.
出处
《灌溉排水学报》
CSCD
北大核心
2004年第4期58-60,共3页
Journal of Irrigation and Drainage
基金
国家自然科学基金重点项目(50339030)
国家自然科学基金委员会项目(90202001)
甘肃省水利厅科技计划项目资助
关键词
甘肃
石羊河流域
沙丘
定植
沙生植物
局部灌溉
试验
psammophytic
localized irrigation
survival
diameter of fresh treetop
length of fresh treetop
