新疆杨农田防护林胁地效应研究  

Research on Land Threatening Effect of Populus bolleana Farmland Shelterbelt

作　　者：朱玉伟 陈启民 田志佳 桑巴叶 Zhu Yuwei;Chen Qimin;Tian Zhijia;Sang Baye(Institute of Afforestation and Sand Control Research,Xinjiang Academy of Forestry Science,Urumqi 830002,China)

机构地区：[1]新疆林科院造林治沙研究所,新疆乌鲁木齐830002

出　　处：《防护林科技》2023年第2期13-16,共4页Protection Forest Science and Technology

基　　金：新疆维吾尔自治区林业发展补助资金项目“塔里木盆地东北缘杨树防护林耗水规律研究”(XJLYKJ-2021-20);新疆维吾尔自治区公益性科研院所基本科研业务费专项资金项目“新疆绿洲防护林可持续经营技术研究”。

摘　　要：农田防护林在具有良好的护田增产作用的同时,也对林缘附近的农作物或果树产生胁地影响。研究防护林带胁地原因及胁地范围,并提出解决对策,对农田防护林建设意义重大。通过在试验示范区布设观测点,采集数据,对农田防护林胁地效应进行研究。结果表明:根胁地对香梨的影响范围为10~12.5 m;在未断根香梨耕作层范围内,随着测点由靠近林带向香梨林分中部延伸,土壤含水率逐步增高;在12.5 m范围内,断根土壤含水率高于未断根。林带虽对农作物产生明显的影响,但只要采取一定的技术措施或在胁地范围内种植苜蓿等耐阴饲草及作物,可将损失降到最低程度。Farmland shelterbelts not only have a good effect on protecting farmland and increasing production,but also have a threatening effect on crops or fruit trees near the forest edge.It is of great significance for the construction of farmland shelterbelts to study the causes and scope of land threat of shelterbelts and put forward solutions.By setting up observation points in the experimental demonstration area,data were collected to study the land threat effect of farmland shelterbelt.The results showed as follows:the influence range of flanking ground on fragrant pear was 10-12.5m;in the cultivated layer of fragrant pear without broken roots,the soil moisture content gradually increased as the measuring point extended from near the forest belt to the middle of fragrant pear stand;within the range of 12.5m,the water content of the soil with broken roots was higher than that without broken roots.Although the forest belt has a significant impact on crops,as long as certain technical measures are taken or shade tolerant forages and crops such as alfalfa are planted within the threat area,the loss can be reduced to the minimum.

关 键 词：农田防护林 胁地效应 断根处理 

分 类 号：S792.11[农业科学—林木遗传育种] S727.24[农业科学—林学]