河南农业科学Issue(11)：55-59,5.
施氮量对砂姜黑土玉米生长及水分利用效率的影响
Effect of Amount of Nitrogen Fertilizer on Grow th and Water U se of M aize under Shajiang Black Soil
摘要
Abstract
In order to ascertain the effects of different application levels of nitrogen fertilizer on growth and water utilization of maize under Shajiang black soil ,a field experiment was conducted to investigate the effect of different dosage of nitrogen fertilizer on soil moisture ,maize agronomic characters ,production elements ,yield and water utilization .The results indicated that nitrogen fertilizer improved soil moisture content in the 0-100 cm deep soil ,especially the treatment with 360 kg/ha nitrogen .And when the dosage of nitrogen fertilizer was 360 kg/ha ,the maize leaf number ,plant height ,and stem diameter were significantly higher than other treatments at diffe-rent maize grow th period .With the increase of nitrogen fertilizer ,the biomass increased first and then decreased ,that of the treatment with 540 kg/ha nitrogen fertilizer was the largest ,which in-creased by 31 .9% compared with the CK ,while the biomass of the treatment with 90 kg/ha and 360 kg/ha nitrogen fertilizer was significantly lower than the CK .What’more ,maize yield and water use efficiency increased first and then reduced gradually with the increase of nitrogen fertil-izer .While the highest yield was founded in the treatment with 270 kg/ha nitrogen fertilizer ,and the highest water use efficiency occurred in the treatment with 360 kg/ha compared with the other treatments ,but which was no significant differences compared with the treatment with 270 kg/ha nitrogen fertilizer .It was concluded that the dosage of 270 kg nitrogen fertilizer per hectare is rec-ommendated according to the comprehensive factors .关键词
砂姜黑土/氮肥/玉米/产量/水分利用效率Key words
Shajiang black soil/nitrogen fertilizer/maize/yield/water utilization efffeciency分类
农业科技引用本文复制引用
杨永辉,武继承,梅雷,杨先明..施氮量对砂姜黑土玉米生长及水分利用效率的影响[J].河南农业科学,2013,(11):55-59,5.基金项目
公益性行业（农业）科研专项经费项目 （）
