| 农田防护林网林地水分状况研究 |
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| 引用本文： | 李银芳,杨戈. 农田防护林网林地水分状况研究[J]. 中国沙漠, 1997, 17(3): 295-300 |
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| 作者姓名： | 李银芳 杨戈 |
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| 作者单位： | 中国科学院新疆生物土壤沙漠研究所, 乌鲁木齐 830011 |
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| 基金项目： | 国家“八五”攻关专题“干旱、半干旱地区防护林建设与水分平衡研究” |
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| 摘 要： | 通过1992~1994年的定位观测,对农田防护林网中的护田林、护渠林林地含水量和林木生长进行了研究。结果表明,3年平均耗水量:护田林是154.40 mm,护渠林内侧2995.92 mm,护渠林外侧1514.75 mm。护田林带的土壤含水量在0~150 cm层内变化,以下为稳定层,而护渠林深层渗漏严重,可穿透3 m土层。胸径和材积生长量是护渠林内侧>护渠林外侧>护田林,但护田林若遇丰水年份,则胸径和材积猛增。农田防护林网的布置格局,应大力发展护渠林。护田林带应采用3行窄带式沟植,成林后可不再灌溉,但切忌农田休闲时,中断维持林木生长的侧渗水。
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| 关 键 词： | 箭杆杨 农田防护林网 耗水量 |
| 收稿时间： | 1996-05-15 |
| 修稿时间： | 1996-09-09 |
STUDIES ON MOISTURE CONTENT IN WOODLAND OF A FARM PREVENTING FOREST NETWORK |
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| Li Yingfang Yang Ge. STUDIES ON MOISTURE CONTENT IN WOODLAND OF A FARM PREVENTING FOREST NETWORK[J]. ournal of Desert Research, 1997, 17(3): 295-300 |
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| Authors: | Li Yingfang Yang Ge |
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| Affiliation: | Institute of Biology, Pedology and Desert Research, Chinese Academy of Sciences, Urumqi 830011 |
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| Abstract: | The relation of soil moisture and plant's growth in farm preventing forest network has been studied,based on the fixed position data observed in 1992~1994.The results are as follows:① The average water consumption of farm shelterbelt,inner side and outer side canal shelterbelt in three years are 154.40,2 995.92 and 1 514.75 mm individually.② The soil moisture content changes between 0~150 cm below the ground in farm shelterbelt land and 0~-3 m or more in canal shelterbelt land.③ The farmland shelterbelt should be constructed by narrow belt with three lines,and the water source after the plant growing up may be applied by side-seeped water from farmland.As for the establishment of compound forest network,the canal shelterbelt should be developped with great effort. |
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| Keywords: | Populus nigra Farm preventing forest network Water consumption |
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