农业工程学报2012，Vol.28Issue(14)：99-103,5.DOI:10.3969/j.issn.1002-6819.2012.14.016
玉米灌浆期渍水对产量及氮磷淋失量的影响
Effects of waterlogging at gain filling stage on corn yield, nitrogen and phosphorus leaching loss
摘要
Abstract
The testing-hole experiment was conducted to investigate the effect of waterlogging at grain filling stage on the yield of maize and the leaching loss of nitrogen and phosphorus. The results showed the maximum content of total nitrogen of 2.037 and 1.833mg/L occurred in the fifth day, under the underground water table in 30 cm and in 50 cm respectively. The content of total phosphorus came to the peak value in the third day at 0.163 mg/L and 0.148 mg/L under the underground water table in 30 cm and in 50 cm respectively. Waterlogging depth of 30 cm more than 3 days and 50 cm more than 5 days can cause maize yield decreased significantly. Therefore, it is very important to control the proper underground water level and waterlogging days for corn grain formation at grain filling stage of maize in the rainy season. This research provides reference for design and management of controlled drainage in farmland.关键词
灌溉/氮/磷/渍水/灌浆期/玉米/产量/测坑试验Key words
irrigation/ nitrogen/ phosphorus/ waterlogging/ corn/ grain filling stage/ yield/ the testing-hole experiment分类
农业科技引用本文复制引用
周新国,韩会玲,李彩霞,郭树龙,郭冬冬,陈金平..玉米灌浆期渍水对产量及氮磷淋失量的影响[J].农业工程学报,2012,28(14):99-103,5.基金项目
公益性行业(农业)科研专项经费项目(201203077,201203032) （农业）
中国农业科学院基本业务费项目资助(2012ZL065) （2012ZL065）
