干旱地区农业研究2013，Vol.31Issue(2)：141-145,5.
控制灌溉条件下种植密度对玉米中地77生长和耗水的影响
Effects of planting density on plant growth and water consumption of Zhongdi77 maize under controlled irrigation
摘要
Abstract
Effects of planting density on plant growth and water consumption were studied with Zhongdi77 maize as the test material under controlled irrigation in the western semi-arid region of Liaoning province. The results showed that the plant height, stem diameter, leaf area per plant, ear length, axle weight, grains per row, grains per ear and grain weight per ear decreased with the increase of plant density; The ear diameter and rows per ear were influenced very little by planting density; The leaf area index, barren ear tip, daily water consumption, water consumption during each growing stage, and total water consumption increased with the increase of plant density; The total water consumption under the highest density was 28.6 % more than that under the lowest density. The regression analysis showed that as the plant density increased, the yield and water use efficiency increased at the beginning and then decreased. Therefore, for the purpose of saving water and raising grain yield, the suitable density of Zhongdi77 is 6 ~ 6.75 × 104 plants·hm-2 under controlled irrigation in the western semi-arid region of Liaoning Province.关键词
产量/耗水量/控制灌溉/水分利用效率/叶面积指数Key words
yield/ water consumption/ controlled irrigation/ water use efficiency/ leaf area index分类
农业科技引用本文复制引用
窦超银,于秀琴,于景春..控制灌溉条件下种植密度对玉米中地77生长和耗水的影响[J].干旱地区农业研究,2013,31(2):141-145,5.基金项目
水利部科技推广项目(TG1203):辽西北地区农业节水丰产与抗旱减灾实用技术推广 （TG1203）
水利部公益性行业科研专项资助项目(201101061):辽西北农业干旱防御与抗旱减灾关键技术研究 （201101061）
