[1]刘孟雨,陈培元.不同土壤水分下小麦幼苗出土幼苗生长及叶片光合作用的变化[J].水土保持研究,1988,(02):77-82,76.
Liu Mengyu,Chen Peiyuan.Changes in Emergence of Wheat Seedling, Seedling Growth and Leaf Photosynthesis Under Different Soil Water Conditions[J].Research of Soil and Water Conservation,1988,(02):77-82,76.
点击复制
Liu Mengyu,Chen Peiyuan.Changes in Emergence of Wheat Seedling, Seedling Growth and Leaf Photosynthesis Under Different Soil Water Conditions[J].Research of Soil and Water Conservation,1988,(02):77-82,76.
不同土壤水分下小麦幼苗出土幼苗生长及叶片光合作用的变化
《水土保持研究》[ISSN:1005-3409/CN:61-1272/P]
卷:
期数:
1988年02期
页码:
77-82,76
栏目:
出版日期:
1900-01-01
- Title:
- Changes in Emergence of Wheat Seedling, Seedling Growth and Leaf Photosynthesis Under Different Soil Water Conditions
- 摘要:
- 本文研究了不同土壤水分下小麦(小偃6号)幼苗出土及幼苗生长的变化,结果表明,轻微的土壤水分亏缺使根的伸长加快,根量增加;严重的土壤水分亏缺使根和幼苗生长受抑,干旱下根/冠比增大.土壤水势低于1.80MPa时,幼苗几平不能出土.土壤水势在-0.61MPa时,形成的苗既小又弱,形成弱小苗的原因是叶片光合能力下降、呼吸增加的结果.根据实验结果本文提出,小偃6号向较旱区推广是一慎重的问题.
- Abstract:
- This experiment studies the effects of soil droughts on the emergence of wheat seedling(Xiao Yan-6),seedling growth and leaf photosynthesis,and analyses the cause of weak seedling being formed under siol drought conditions.The results are as follows:Under soil drought conditions,emergence of seedling takes long time and the ratio of root/shoot increases,if the soil water potential is lower than -1.80 MPa,few seedlings can emerge.Root growthes rapidly and the number of root increases under mild soil drought.Under serious soil drought conditions,the growth of seedling decreases and the root system of seedling are weak,which is caused by decrease in leaf photosynthesis ability and increase in the dark respiration.
参考文献/References:
[1] 陈培元等,渭北旱塬小麦的耗水特性与抗旱增产措施,《植物生态学与地植物学学报》,1986年第1期.
[2] (英)J.库姆斯、D.O.霍尔等:《生物生产力和光合作用测定技术》,科学出版社,1986.
[3] 上海植物生理学会编.《植物生理学实验手册》,上海科学技术出版社,1985.
[4] 陈培元等:不同水分张力和亚适温条件下冬小麦种子萌发特性和抗旱性的关系,《植物生理学报》,1982,8(8),117-125.
更新日期/Last Update:
1900-01-01