适应气候变化的吉林省半干旱区玉米播种期

应用生态学报 ›› 2012, Vol. 23 ›› Issue (10): 2795-2802.

适应气候变化的吉林省半干旱区玉米播种期

靳英华¹,周道玮^{2 **},秦丽杰^1

(¹东北师范大学城市与环境科学学院, 长春 130024； ²中国科学院东北地理与农业生态研究所, 长春 130012)

出版日期:2012-10-18 发布日期:2012-10-18

Sowing date of corn in semiarid region of Jilin Province, Northeast China in adapting to climate change.

JIN Ying-hua¹, ZHOU Dao-wei², QIN Li-jie¹

(¹School of Urban and Environment Science, Northeast Normal University, Changchun 130024, China; ²Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130012, China)

Online:2012-10-18 Published:2012-10-18

摘要/Abstract

摘要： 全球气候变化背景下，吉林省西部半干旱区气候发生明显变化，对该区域的玉米生产产生了深刻影响.本文于2008年进行了3个早播和传统播种试验，早播的玉米种子分别进行3种处理(10 ℃催芽、25 ℃催芽和干种子)，考察早播不同种子处理对玉米出苗、生长和产量的影响，比较早播与传统播期对玉米生长和产量的影响.结果表明： 1961—2010年，研究区玉米生长季初日提前，气温显著升高，降水呈减少趋势；目前，吉林省半干旱区玉米播种可提前至4月11日；采用10 ℃水温浸种催芽播种、直接播种干种子、坐水种等方式，均有利于早播的出苗和抗寒；早播玉米株高和叶面积显著高于传统播期，产量比传统播期高35%～48%.

Abstract: Under the background of global climate change, the climate in semiarid region of west Jilin Province changed greatly, producing a profound impact on the corn production in this region. In this study, the corn seeds were under three treatments (accelerating germination at 10 and 25 ℃, and dry seeds), and a field experiment with early sowing and traditional sowing was conducted in 2008 to investigate the effects of early sowing these seeds on the seedling emergence, growth, and yield, and compare the effects of early sowing and traditional sowing dates on the corn production and yield. In 1961-2010, the first day of the growth season of corn in semiarid region of west Jilin Province was advanced, the air temperature increased significantly, and the precipitation displayed a decreasing trend. At present, the corn sowing date in this region could be advanced to 11 th, April. Accelerating germination at 10 ℃, directly sowing dry seeds, and
bedirrigation sowing all benefited the seedling emergence and cold resistance of early-sown seeds, and the corn plant height and leaf area under early sowing were significantly higher, with the yield increased by 35%-48%, compared with those under traditional sowing.

靳英华1,周道玮2 **,秦丽杰1. 适应气候变化的吉林省半干旱区玉米播种期[J]. 应用生态学报, 2012, 23(10): 2795-2802.

JIN Ying-hua1, ZHOU Dao-wei2, QIN Li-jie1. Sowing date of corn in semiarid region of Jilin Province, Northeast China in adapting to climate change.[J]. Chinese Journal of Applied Ecology, 2012, 23(10): 2795-2802.