干旱区生态环境知识资源中心(Arid): 半干旱区膜上覆土穴播对春小麦旗叶光合作用和水分利用的影响

Arid

	半干旱区膜上覆土穴播对春小麦旗叶光合作用和水分利用的影响
其他题名	Photosynthetic gas exchange and water utilization of flag leaf of spring wheat with bunch sowing and field plastic mulching below soil on semi-arid rain-fed area
	杨文雄 1; 柳娜 1; 刘效华 1; 张雪婷 1; 王世红 1; 袁俊秀 1; 张绪成 2
来源期刊	应用生态学报
ISSN	1001-9332
出版年	2016
卷号	27 期号:7 页码:2264-2272
中文摘要	在甘肃定西大田定位试验的基础上,20122013年连续2年比较了全膜覆土穴播(PMS)、覆膜穴播(PM)和露地穴播(CK)春小麦旗叶的SPAD 值、叶绿素荧光参数、光合气体交换参数以及叶面积指数(LAI)、产量、耗水量和水分利用效率.结果表明: PMS 提高了小麦旗叶SPAD 值,扬花后显著高于PM,增加了10.0%~ 21.5%,较CK 增加了3.2%~ 21.6%.PMS的旗叶最大光化学效率(F_v /F_m)、PSⅡ实际光化学效率(Phi_(PSⅡ))和光化学猝灭系数高于PM和 CK,较PM 最高分别提高了6.1%、9.6%和30.9%,并在灌浆期达到显著差异; 而PMS 的非光化学猝灭系数(q_N)值最低,并在抽穗期与PM 达显著差异水平,2012和2013年分别降低了23.8%和15.4%.PMS 的气孔导度(g_s)较PM和CK 高,在灌浆期与PM 达到显著差异,2012和2013年分别提高了17.1%和21.1%; PMS 的蒸腾速率(T_r)较PM 提高了5.4%~16.7%,光合速率(P_n)增加了11.2%~23.7%,旗叶瞬时水分利用效率(WUE_i)提高了5.6% ~ 7.2%(除2013年抽穗期外),并在2012年扬花期达到显著差异.PMS 的LAI 高于PM和CK,尤其在季节性干旱的2013年达到显著差异.因此,PMS 提高了叶片SPAD 值,增强了旗叶对光合能量的同化能力和气体交换强度,使更多的光合能量进入光化学同化方向,降低了热耗散,使P_n增加,提高了旗叶WUE_i,基于较高的光合速率和群体LAI,最终提高小麦产量和水分利用效率.
英文摘要	Based on the field experiment which was conducted in Dingxi County of Gansu Province, and involved in the three treatments: ( 1) plastic mulching on entire land with soil coverage and bunching ( PMS) ,( 2) plastic mulching on entire land and bunching ( PM) ,and ( 3) direct bunching without mulching ( CK) . The parameters of SPAD values,chlorophyll fluorescence parameters, photosynthetic gas exchange parameters,as well as leaf area index ( LAI) ,yield,evapotranspiration, and water use efficiency in flag leaves of spring wheat were recorded and analyzed from 2012 to 2013 continuously. The results showed that SPAD values of wheat flag leaves increased in PMS by 10.0%-21.5% and 3.2%-21.6% compared to PM and CK in post-flowering stage,respectively. The maximum photochemical efficiency ( F_v /F_m) ,actual photochemical efficiency ( Phi_(PSⅡ)) of photosystem Ⅱ ( PSⅡ) ,and photochemical quenching coefficient ( q_P) of PMS were higher than those of PM and CK,the maximum increment values were 6.1%,9.6% and 30.9% as compared with PM,and significant differences were observed in filling stage ( P<0.05) . The values of q_N in PMS were lowest among the three treatments,and it decreased significantly by 23.8% and 15.4% in heading stage in 2012 and 2013 respectively,as compared with PM. The stoma conductance ( g_s) of wheat flag leaves in PMS was higher than that of PM and CK,with significant difference being observed in filling stage,and it increased by 17.1% and 21.1% in 2012 and 2013 respectively,as compared with PM. The transpiration rate ( T_r) ,net photosynthetic rate ( P_n) ,and leaf instantaneous water use efficiency ( WUE_i) except heading stage in 2013 of PMS increased by 5.4%-16.7%, 11.2%-23.7%,and 5.6%-7.2%,respectively,as compared with PM,and significant difference of WUEi was observed in flowering stage in 2012. The leaf area index ( LAI) of PMS was higher than that of PM and CK,especially,it differed significantly in seasonal drought of 2013. Consequently, the PMS increased the SPAD values in flag leaves of spring wheat,and the capacity of flag leaves for photo energy assimilation and photosynthetic gas exchange were enhanced,caused more photosynthetic energy flowing into photochemical process,as well as decreased the heat dissipation, resulted in the increment of Pn and WUEi . Based on the higher Pn and LAI,the yield and WUE of PMS increased.
中文关键词	半干旱区 ; 膜上覆土穴播 ; 春小麦 ; 叶绿素荧光参数 ; 光合气体交换 ; 水分利用效率
英文关键词	rain-fed semi-arid area whole field soil-plastic mulching and bunch sowing spring wheat chlorophyll fluorescence parameter photosynthetic gas exchange water use efficiency
语种	中文
国家	中国
收录类别	CSCD
WOS类目	AGRONOMY
WOS研究方向	Agriculture
CSCD记录号	CSCD:5749555
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/235247
作者单位	1.甘肃省农业科学院小麦研究所, 兰州, 甘肃 730070, 中国; 2.甘肃省农业科学院旱地农业研究所, 兰州, 甘肃 730070, 中国
推荐引用方式 GB/T 7714	杨文雄,柳娜,刘效华,等. 半干旱区膜上覆土穴播对春小麦旗叶光合作用和水分利用的影响[J],2016,27(7):2264-2272.
APA	杨文雄.,柳娜.,刘效华.,张雪婷.,王世红.,...&张绪成.(2016).半干旱区膜上覆土穴播对春小麦旗叶光合作用和水分利用的影响.应用生态学报,27(7),2264-2272.
MLA	杨文雄,et al."半干旱区膜上覆土穴播对春小麦旗叶光合作用和水分利用的影响".应用生态学报 27.7(2016):2264-2272.