引用本文:王 颖,崔建州,袁玉欣,商海华,杨宝臣. 农林问间系统林木遮荫及其对产量的影响[J]. 中国生态农业学报(中英文), 2003, 11(2): 107-110
WANG Ying,CUI Jian-Zhou,YUAN Yu-Xin,SHANG Hal-Hua,YANG Bao-Chen. The shading and its effect on crop yield under poplar-crop intercropping system[J]. Chinese Journal of Eco-Agriculture, 2003, 11(2): 107-110
DOI:DOI:10.3724/SP.J.1011.year_id].0107
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农林问间系统林木遮荫及其对产量的影响
王 颖1, 崔建州1, 袁玉欣1, 商海华2, 杨宝臣2
1.河北农业大学林学院 保定 071000;2.河北省丰宁县林业局 丰宁 068300
摘要:  试验研究华北平原农区杨粮间作系统毛白杨对农田遮荫结果表明,毛白杨幼林(株行距3m×2m×18m)1~7年生遮荫指数为1.3%~67.8%,遮荫程度为0.3%~16.5%。中龄林-成林(株行距4m×30m)10~14年生遮荫指数为51.3%~76.0% ,遮荫程度为22.8%~28.1%,指出10%的遮荫程度是田间可接受的最大遮荫程度,且为保持作物产量,杨树成林后行距应保持在30m 以上。
关键词:  杨粮间作 遮荫程度 遮荫指数 毛白杨 作物产量
中图分类号:
基金项目:河北省自然科学基金项目“杨粮间作的生理生态学基础研究”和河北省林业厅项目“河北省平原农区混农速生丰产林生态系统结构、功能和经济效益的研究(9516102)”共同资助
The shading and its effect on crop yield under poplar-crop intercropping system
WANG Ying1, CUI Jian-Zhou1, YUAN Yu-Xin1, SHANG Hal-Hua2, YANG Bao-Chen2
1.College of Forestry,Hebei Agricultural University,Baoding 071000;2.Forestry Bureau of Fengning County,Hebei Province,Fengning 068300
Abstract:  The poplar(Populus tomentosaCarr.)shading on farm field is reported under poplar-crop intercropping systam in Northern China farm region.The results show that the young poplar with a space of 3m×2m×18m brings a shading index of 1.3%~67.8% and a shading degree of 0.3% ~ 16.5% on farm field when the stand ages are 1~7 years,and middle-mature poplar with a space of 4m ×30m results in a shading index of 51.3%~ 76.0% and a shading degree of 22.8%~28.1% when the stand ages 10~14 years as wel1.The study shows that the shading degree of 10% is the maximum shading degree that can be accepted in farm field,and the trees with a space of 30m between rows can keep the crop yield stea dy when poplar is entering mature stage.
Keyword:  Poplar-crop intercropping,Shading degree,Shading index,Populus tomentosa Carr.,Crop yield
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