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当前位置: 首页 > 文章 > 套作棉花共生期需水规律研究 棉花学报 2003,15 (3) 155-158
Position: Home > Articles > Regularity of Water Requirement by Intercropped Cotton in the Symbiotic Period Cotton Science 2003,15 (3) 155-158

套作棉花共生期需水规律研究

作  者：
毛树春;韩迎春;宋美珍;董合林;范正义;王国平
单  位：
中国农业科学院棉花研究所
关键词：
麦棉两熟;共生期;配置方式;土壤吸水力
摘  要：
黄淮平原麦棉两熟共生期长达50d,水分胁迫是导致套作棉花迟发晚熟的重要因素,研究减缓共生期水分胁迫对棉花促早发有重要意义。测定表明,套作棉花共生期土壤吸水力较同期一熟种植棉田变化幅度大,出现3次峰值,土壤吸水力均高于 60Kpa;地膜覆盖有利于保墒,提高水分利用率,一熟与两熟种植几种配置方式土壤吸水力均低于不覆盖;在两熟种植条件下,3 1式配置方式土壤吸水力出现 60Kpa的时间比4 2式提前4～6d,且持续时间长,不利于棉苗生长,4 2式较利于棉苗生长。研究结果表明,共生期棉田土壤吸水力达到 60Kpa之前应及时灌水,否则棉苗出现萎蔫死亡。
译  名：
Regularity of Water Requirement by Intercropped Cotton in the Symbiotic Period
作  者：
MAO Shuchun, HAN Yingchun , SONG Meizhen, DONG Helin , FAN Zhengyi , WANG Guoping(CCRI Anyang Henan 455112, china)
关键词：
cotton-wheat double cropping; symbiotic period; pattern; soil moisture suction
摘  要：
The symbiotic period in cottonwheat double cropping system in HuangHui plain lasts 50 days. The water stress is the important factor for late sprouting and ripping of interplanted cotton. It is significant for hastening early germination of cotton to study the mitigating moisture stress in symbiotic period. Tests showed that the soil moisture suction in cottonwheat symbiotic period fluctuates more than that in cotton sole cropping in the same period, and there are three waterabsorbing peaks in which soil moisture suctions are all lower than 60Kpa; film mulching is good for moisture retention and water utilization, and the soil moisture suction in nonmulching pattern is lower than that in the other patterns; the soil moisture suction in 31 pattern reaches 60Kpa 4～6 days earlier than that in 42 pattern, and lasts longer, which are not good for cotton shoot growth, while 42 pattern is good for shoot growth. It is time need to irrigate before soil moisture suction reaches 60Kpa in cottonwheat symbiotic period. Otherwise, the cotton shoot begin to be flaccid and to such an extent as to die. 

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