干旱区生态环境知识资源中心(Arid): 荒漠旱区梨园秸秆覆盖的节水效应及对梨树生长结果的影响

Arid

	荒漠旱区梨园秸秆覆盖的节水效应及对梨树生长结果的影响
其他题名	Effect of Straw Mulching on Watewr Saving and Pear Growth in Arid Desert Areas
	赵长增; 陆璐; 陈佰鸿
来源期刊	农业工程学报
ISSN	1002-6819
出版年	2002
卷号	18 期号:4 页码:32-36
中文摘要	1996～1998年对干旱荒漠地区梨树覆盖秸秆后的节水效应研究表明：覆秸秆后能从整体上提高0～60 cm土层土壤含水率1.8%～3.6%，提高最大幅度出现在该区旱季，此时覆盖树土壤含水率10.3%～13.6%，而对照已处轻中度水分亏缺状态。根系因此生长加速，总根量增加66～88条/m~2，树体水分状况得到相应改善，发育枝的含水率与水势分别提高0.87%～1.33%和0.26～0.35 MPa；叶片含水率与水势分别提高1.28%～2.07%和0.31～0.42 MPa；叶绿素含量增加19.4%，光合速率提高18.1%。果实生长加速，果实纵径和横径平均日生长量增加0.07 mm和0.058 mm，果实纵径快速生长期延长15 d左右，单果质量增加17～24 g，在覆秸秆树挂果数不超过对照树12%时，均可增大果实体积。
英文摘要	Straw mulching as one of the important water saving measures was adopted in this experiment of pear tree in arid desert area during 1996 to 1998. The results showed that soil water content (SWC) in a depth of 0 to 60 cm was increased by 1.8% to 3.6% with straw mulching. The highest increased SWC occurred in drought season, with its range from 10.3% to 13.6% for treatment while that for CK was under water deficiency. Roots grew strongly and increased to 66 to 88 items/m~2. The corresponding water content was increased by 1.28% to 2.07% and 0.87% to 1.33%, and water potential by 0.31 MPa to 0.42 MPa and 0.26 MPa to 0.35 MPa in blade and vegetative shoot, respectively. Both chlorophyll content and photosynthetic rate increased by 19.4% and 18.1%. respectively. As a result, fruit growth enhanced and average increment of both fruit length and width increased by 0.07 mm and 0.058 mm respectively. Single fruit weight increased by 17 to 24 g, and the fruit size increased when the number of fruit per tree did not exceed 12% compared with that without straw mulching.
中文关键词	梨树 ; 秸秆覆盖 ; 节水 ; 果实生长
英文关键词	pear tree straw mulching water saving fruit growth
语种	中文
国家	中国
收录类别	CSCD
WOS类目	AGRICULTURE MULTIDISCIPLINARY
WOS研究方向	Agriculture
CSCD记录号	CSCD:1042136
来源机构	甘肃农业大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/203339
作者单位	甘肃农业大学
推荐引用方式 GB/T 7714	赵长增,陆璐,陈佰鸿. 荒漠旱区梨园秸秆覆盖的节水效应及对梨树生长结果的影响[J]. 甘肃农业大学,2002,18(4):32-36.
APA	赵长增,陆璐,&陈佰鸿.(2002).荒漠旱区梨园秸秆覆盖的节水效应及对梨树生长结果的影响.农业工程学报,18(4),32-36.
MLA	赵长增,et al."荒漠旱区梨园秸秆覆盖的节水效应及对梨树生长结果的影响".农业工程学报 18.4(2002):32-36.