摘要
涌泉灌溉用于大田作物主要问题是流量小，沟、畦横断面大，水流在田间很难向前推进。为此将其与垄膜沟种技术组合，缩小过水横断面，减小或杜绝侧渗，提高水流推进能力，这样可最大限度地减少灌水器（稳流器）数量，改善灌水质量，提高田间土壤水分的均匀度，进而为涌泉灌溉用于大田作物提供了可能性。采用涌泉灌溉配套垄膜沟种耕作方式，提高了降水的有效利用率，减少了灌水量与灌水次数、减少了棵间土壤水蒸发、农田耗水比一般大田灌溉节省28．3％。由于灌水量可控，比一般地面灌溉节约28％～47％。
The main problems of the bubbler irrigation applied in field crops are small water discharge, the big transection area of furrow and border. After the bubbler irrigation of crops planted in furrow with film mulching on ridge being assembled, the moving ability of water flow was increased, the number of flow regulators was reduced, irrigation quality was improved, the uniformity of soil moisture was raised, which provided the possibility of the bubbler irrigation applied in field crops. Through adopting the cultivation way of crops planted in furrow with film mulching on ridge combining with bubbler irrigation, the utilization efficiency of rainfall was increased, the quantity of irrigation water, irrigation frequency and soil evaporation were reduced, moreover water consumption in field and irrigation norm were saved by 28.3G and 28%～47% respectively compared with the border irrigation. In addition, crop yield was increased greatly.
出处
《农业工程学报》
EI
CAS
CSCD
北大核心
2006年第9期74-79,共6页
Transactions of the Chinese Society of Agricultural Engineering
基金
科技部转化资金项目
关键词
涌泉灌溉
垄膜沟种
大田作物
应用试验
春玉米
冬小麦
bubbler irrigation
crops planted in furrow with film mulching on ridge
field crops
application exam
