Effects of Water Spray on SPAD and Chlorophyll Content and Yield of Grape Leaves

doi:10.6048/j.issn.1001-4330.2020.05.005

Abstract

Abstract: 【Objective】 The effects of different water spraying methods on SPAD value, chlorophyll content and yield of grapes under micro-spray conditions in extreme arid areas were studied to determine the high quality and high yield water spray method.【Methods】 The SPAD value, chlorophyll content, quality and yield of grape under different water spraying methods were measured by micro-spray irrigation to analyze the diurnal and diurnal variation characteristics of SPAD value under different water spraying methods and the correlation between SPAD value and chlorophyll content. 【Results】 Under different water spray duration conditions, the SPAD value of each treatment decreased first and then increased. The daily variation value was between 40.1 and 45.6 SPAD, and the daily average value of SPAD value of WP1 was 44.3, followed by WP2 (43.5) and WP3 (42.9), and CK (41.2) was the lowest. The regression equations between grape SPAD value and chlorophyll a, chlorophyll b and total chlorophyll content were: C_a=0.068,5VSPAD-0.890,2, C_b=0.045,4VSPAD-1.019,4, C_t=0.114VSPAD-1.909,6, and in terms of grape quality index and yield, micro-spray improved the quality of VC, polyphenol content and tannin content, and increased the average yield by 8.6%. 【Conclusion】 There was a significant positive correlation between SPAD value and chlorophyll a, chlorophyll b and total chlorophyll content in grape leaves under different water spray patterns, which indicated that it was feasible to use SPAD value to predict chlorophyll a content, b content and total chlorophyll content. This might provide a new method for rapid determination of leaf green content in field grape leaves.

Key words: micro spray; grape; chlorophyll content; yield

摘要： 【目的】研究极端干旱区葡萄微喷条件下,不同喷水方式对葡萄叶片SPAD值和叶绿素含量及产量的影响,确定优质高产的喷水方式,为快速测定大田葡萄叶片叶绿素含量提供新方法。【方法】采用微喷灌溉,对不同喷水方式下,测定葡萄SPAD值、叶绿素含量及品质与产量,分析不同喷水方式处理下的SPAD值日变化及连日变化特征、SPAD值与叶绿素含量相关关系。【结果】在不同喷水时长条件下,各处理的SPAD值呈先减小后增大的变化趋势,日变化值在40.1~45.6 SPAD,其中,WP1的SPAD值(44.3)日平均值最高,其次是WP2(43.5)和WP3(42.9),CK(41.2)最低。葡萄SPAD值与叶绿素a、叶绿素b以及总叶绿素含量间的回归方程,分别为C_a=0.068 5VSPAD-0.890 2,C_b=0.045 4VSPAD-1.019 4,C_t=0.114VSPAD-1.909 6,在葡萄品质指标和产量上,采用微喷可以提高VC含量、多酚含量和单宁含量等多项品质指标,并使葡萄平均增产8.6%。【结论】不同喷水方式下,葡萄叶片SPAD值与叶绿素a、叶绿素b以及总叶绿素含量间均存在极显著正相关关系,利用SPAD值预测叶绿素a含量、b含量与总叶绿素含量是可行的。

关键词: 微喷, 葡萄, 叶绿素含量, 产量

CLC Number:

S663.1

LIU Hongbo, BAI Yungang, ZHANG Jianghui, DING Ping. Effects of Water Spray on SPAD and Chlorophyll Content and Yield of Grape Leaves[J]. Xinjiang Agricultural Sciences, 2020, 57(5): 822-829.

刘洪波, 白云岗, 张江辉, 丁平. 喷水方式对葡萄叶片SPAD值和叶绿素含量及产量的影响[J]. 新疆农业科学, 2020, 57(5): 822-829.

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