Effects of straw mulching on maize photosynthetic characteristics and rhizosphere soil micro-ecological environment

Straw mulching is an effective measure to improve soil properties, crop growth, and yield. To further understand the advantage mechanisms of straw mulching, a field experiment with seven straw mulching levels (0 to 18 000 kg ha-1) was conducted to study the effects of straw mulching on maize (Zea ma...

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Autores principales:	Zhang,Xiangqian, Qian,Yiliang, Cao,Chengfu
Lenguaje:	English
Publicado:	Instituto de Investigaciones Agropecuarias, INIA 2015
Materias:	Chlorophyll content enzyme activities microbe quantity photosynthesis yield Zea mays
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392015000500014
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spelling	oai:scielo:S0718-583920150005000142018-10-01Effects of straw mulching on maize photosynthetic characteristics and rhizosphere soil micro-ecological environmentZhang,XiangqianQian,YiliangCao,Chengfu Chlorophyll content enzyme activities microbe quantity photosynthesis yield Zea mays Straw mulching is an effective measure to improve soil properties, crop growth, and yield. To further understand the advantage mechanisms of straw mulching, a field experiment with seven straw mulching levels (0 to 18 000 kg ha-1) was conducted to study the effects of straw mulching on maize (Zea mays L.) photosynthesis and rhizosphere soil micro-ecological environment. Results showed that maize chlorophyll content was evidently affected by straw mulching, and the highest chlorophyll content was at 12 000 kg ha-1 (M4). Straw mulching could significantly improve the photosynthetic characteristics of maize, and the difference between M4 and 0 kg ha-1 (M0) was significant. There was as trend change in soil microbe quantity; it first increased and then decreased with increasing straw mulching levels, and the most suitable straw mulching level for different types of microorganisms was 9000 kg ha-1 (M3) or M4. Straw mulching significantly enhanced soil enzyme urease, invertase, dehydrogenase, and protease activities, but when the straw mulching level reached a certain level, the effect of straw mulching was no longer apparent and even had some adverse effects at straw mulching levels higher than 15 000 kg ha-1 (M5). Yield in M4 (10 186.84 kg ha-1) was the highest compared with M0 (9365.12 kg ha-1), and yield significantly increased by 8.8%. Correlation analyses indicated that the soil microbe quantity and aforementioned enzyme activities were all significantly and positively correlated with maize chlorophyll content, photosynthetic rate, and yield. Findings suggest that straw mulching can apparently increase soil microbe quantity and enzyme activities and improve crop photosynthesis and yield; the M4 level is the most reasonable straw mulching level in this study under comprehensive consideration, and a straw mulching level that is too high (over M5) will have some negative effects.info:eu-repo/semantics/openAccessInstituto de Investigaciones Agropecuarias, INIAChilean journal of agricultural research v.75 n.4 20152015-12-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392015000500014en10.4067/S0718-58392015000500014
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Chlorophyll content enzyme activities microbe quantity photosynthesis yield Zea mays
spellingShingle	Chlorophyll content enzyme activities microbe quantity photosynthesis yield Zea mays Zhang,Xiangqian Qian,Yiliang Cao,Chengfu Effects of straw mulching on maize photosynthetic characteristics and rhizosphere soil micro-ecological environment
description	Straw mulching is an effective measure to improve soil properties, crop growth, and yield. To further understand the advantage mechanisms of straw mulching, a field experiment with seven straw mulching levels (0 to 18 000 kg ha-1) was conducted to study the effects of straw mulching on maize (Zea mays L.) photosynthesis and rhizosphere soil micro-ecological environment. Results showed that maize chlorophyll content was evidently affected by straw mulching, and the highest chlorophyll content was at 12 000 kg ha-1 (M4). Straw mulching could significantly improve the photosynthetic characteristics of maize, and the difference between M4 and 0 kg ha-1 (M0) was significant. There was as trend change in soil microbe quantity; it first increased and then decreased with increasing straw mulching levels, and the most suitable straw mulching level for different types of microorganisms was 9000 kg ha-1 (M3) or M4. Straw mulching significantly enhanced soil enzyme urease, invertase, dehydrogenase, and protease activities, but when the straw mulching level reached a certain level, the effect of straw mulching was no longer apparent and even had some adverse effects at straw mulching levels higher than 15 000 kg ha-1 (M5). Yield in M4 (10 186.84 kg ha-1) was the highest compared with M0 (9365.12 kg ha-1), and yield significantly increased by 8.8%. Correlation analyses indicated that the soil microbe quantity and aforementioned enzyme activities were all significantly and positively correlated with maize chlorophyll content, photosynthetic rate, and yield. Findings suggest that straw mulching can apparently increase soil microbe quantity and enzyme activities and improve crop photosynthesis and yield; the M4 level is the most reasonable straw mulching level in this study under comprehensive consideration, and a straw mulching level that is too high (over M5) will have some negative effects.
author	Zhang,Xiangqian Qian,Yiliang Cao,Chengfu
author_facet	Zhang,Xiangqian Qian,Yiliang Cao,Chengfu
author_sort	Zhang,Xiangqian
title	Effects of straw mulching on maize photosynthetic characteristics and rhizosphere soil micro-ecological environment
title_short	Effects of straw mulching on maize photosynthetic characteristics and rhizosphere soil micro-ecological environment
title_full	Effects of straw mulching on maize photosynthetic characteristics and rhizosphere soil micro-ecological environment
title_fullStr	Effects of straw mulching on maize photosynthetic characteristics and rhizosphere soil micro-ecological environment
title_full_unstemmed	Effects of straw mulching on maize photosynthetic characteristics and rhizosphere soil micro-ecological environment
title_sort	effects of straw mulching on maize photosynthetic characteristics and rhizosphere soil micro-ecological environment
publisher	Instituto de Investigaciones Agropecuarias, INIA
publishDate	2015
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392015000500014
work_keys_str_mv	AT zhangxiangqian effectsofstrawmulchingonmaizephotosyntheticcharacteristicsandrhizospheresoilmicroecologicalenvironment AT qianyiliang effectsofstrawmulchingonmaizephotosyntheticcharacteristicsandrhizospheresoilmicroecologicalenvironment AT caochengfu effectsofstrawmulchingonmaizephotosyntheticcharacteristicsandrhizospheresoilmicroecologicalenvironment
_version_	1714205354316791808

Effects of straw mulching on maize photosynthetic characteristics and rhizosphere soil micro-ecological environment

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