| Cite this article: | 陈立宇,张立峰,路站远,等.痕量灌溉对棉花花铃期光合性能日变化及产量的影响[J].灌溉排水学报,0,():-. |
| CHEN Liyu.,ZHANG Lifeng,LU Zhanyuan.,et al.痕量灌溉对棉花花铃期光合性能日变化及产量的影响[J].灌溉排水学报,0,():-. |
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| The Effects of Trace Irrigation on the Yield and Diurnal Changes of Photosynthesis During Flowering and Bolling Stage of Cotton |
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CHEN Liyu.1,2, ZHANG Lifeng1, LU Zhanyuan.1,2, XIAN Feng2, ZHANG Jianzhong1, ZHANG Xiangqian1,3,2,3
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1.College of Agronomy,Hebei Agricultural University;2.Inner Mongolia Academy of Agricultural and Animal Husbandry Science;3.China
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| Abstract: |
| 【Objective】In order to determine the applicability of trace irrigation method in cotton field in arid area。【Method】With the variety of China Cotton Institute 92 , the effects of trace irrigation with the tube buried depth of 30cm (D30), 40cm (D40), 50cm (D50) and sub-membrane drip irrigation (CK) on the yield and diurnal variation of photosynthesis during the flowering and boll stage of cotton were systematically analyzed. 【Result】The results showed: 1. The diurnal variation of net photosynthetic rate and stomatal conductance presented a bimodal curve with different treatments, and the net photosynthetic rate and stomatal conductance of D30 treatment were higher than other treatments. 2. The diurnal variation of intercellular CO2 concentration under different treatments showed a trend of “Beikou V-shaped” bimodal curve. The daily variation of transpiration rate showed a single-peak curve, and the maximum appeared at 14:00. 3.The two-year average seed cotton yield and average lint yield of D30 treatment were the highest, which were 5734.28kg/hm2 and 2545.53kg/hm2, respectively, the seed cotton yield was 1.09%, 7.63% and 11.38% higher than CK,D40 and D50, respectively,and the lint yield was 3.49%, 8.32% and 1.61% higher than CK,D40 and D50, respectively. 【Conclusion】According to the diurnal variation of daily photosynthetic characteristics and cotton yield effects, it is concluded that the trace irrigation technique with the tube buried depth of 30 cm is optimal in the cotton field in Alashan area , Inner Mongolia. |
| Key words: trace irrigation; cotton; flowering and boll stage; diurnal variation of photosynthetic; yield |
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