Effects of straw returning on rice growth and yield under water-saving irrigation

ABSTRACT Straw returning (SR) is an important means of straw utilization, which has been tested and is helpful for improving soil fertility and crop production. However, the effects of SR on plant growth and yield of paddy rice (Oryza sativa L. subsp. japonica Kato) under water-saving irrigation (WS...

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Autores principales:	Wei,Qi, Xu,Junzeng, Sun,Lu, Wang,Haiyu, Lv,Yuping, Li,Yawei, Hameed,Fazli
Lenguaje:	English
Publicado:	Instituto de Investigaciones Agropecuarias, INIA 2019
Materias:	Controlled irrigation flooding irrigation irrigation water use efficiency Oryza sativa soil available nutrients straw returning yield components.
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392019000100066
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spelling	oai:scielo:S0718-583920190001000662019-02-19Effects of straw returning on rice growth and yield under water-saving irrigationWei,QiXu,JunzengSun,LuWang,HaiyuLv,YupingLi,YaweiHameed,Fazli Controlled irrigation flooding irrigation irrigation water use efficiency Oryza sativa soil available nutrients straw returning yield components. ABSTRACT Straw returning (SR) is an important means of straw utilization, which has been tested and is helpful for improving soil fertility and crop production. However, the effects of SR on plant growth and yield of paddy rice (Oryza sativa L. subsp. japonica Kato) under water-saving irrigation (WSI) are rarely investigated. In the 2015 and 2016 rice seasons, field experiments were conducted with four treatments, namely controlled irrigation with conventional fertilization (CI- CF), controlled irrigation with straw returning (CI-SR), flooding irrigation with conventional fertilization (FI-CF), and flooding irrigation with straw returning (FI-SR). The objective of the present study was to investigate the response of plant height, number of tillers, biomass, and yield to SR and irrigation management. Results indicated that SR enhanced rice yield on average by 7.9% and 7.5% and improved irrigation water use efficiency (IWUE) by 6.3% and 8.3% in 2015 and 2016, respectively. The CI-SR combination significantly increased IWUE compared with FI-CF. These results suggested that SR could offset the inhibition of rice growth caused by CI, and the CI-SR combination could be an effective measure to enhance soil fertility, maintain the rice field, and increase IWUE. Furthermore, rice growth (plant height, number of tillers, and biomass) was slightly inhibited by SR during the first 20 d of the rice season, but increased after the jointing stage (approximately 40 d after transplanting). This implied that diverting some top-dressed chemical N fertilizer into basal application may be necessary for fertilizer management to better meet crop nutrient uptakes in rice fields with SR application, especially with CI.info:eu-repo/semantics/openAccessInstituto de Investigaciones Agropecuarias, INIAChilean journal of agricultural research v.79 n.1 20192019-03-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392019000100066en10.4067/S0718-58392019000100066
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Controlled irrigation flooding irrigation irrigation water use efficiency Oryza sativa soil available nutrients straw returning yield components.
spellingShingle	Controlled irrigation flooding irrigation irrigation water use efficiency Oryza sativa soil available nutrients straw returning yield components. Wei,Qi Xu,Junzeng Sun,Lu Wang,Haiyu Lv,Yuping Li,Yawei Hameed,Fazli Effects of straw returning on rice growth and yield under water-saving irrigation
description	ABSTRACT Straw returning (SR) is an important means of straw utilization, which has been tested and is helpful for improving soil fertility and crop production. However, the effects of SR on plant growth and yield of paddy rice (Oryza sativa L. subsp. japonica Kato) under water-saving irrigation (WSI) are rarely investigated. In the 2015 and 2016 rice seasons, field experiments were conducted with four treatments, namely controlled irrigation with conventional fertilization (CI- CF), controlled irrigation with straw returning (CI-SR), flooding irrigation with conventional fertilization (FI-CF), and flooding irrigation with straw returning (FI-SR). The objective of the present study was to investigate the response of plant height, number of tillers, biomass, and yield to SR and irrigation management. Results indicated that SR enhanced rice yield on average by 7.9% and 7.5% and improved irrigation water use efficiency (IWUE) by 6.3% and 8.3% in 2015 and 2016, respectively. The CI-SR combination significantly increased IWUE compared with FI-CF. These results suggested that SR could offset the inhibition of rice growth caused by CI, and the CI-SR combination could be an effective measure to enhance soil fertility, maintain the rice field, and increase IWUE. Furthermore, rice growth (plant height, number of tillers, and biomass) was slightly inhibited by SR during the first 20 d of the rice season, but increased after the jointing stage (approximately 40 d after transplanting). This implied that diverting some top-dressed chemical N fertilizer into basal application may be necessary for fertilizer management to better meet crop nutrient uptakes in rice fields with SR application, especially with CI.
author	Wei,Qi Xu,Junzeng Sun,Lu Wang,Haiyu Lv,Yuping Li,Yawei Hameed,Fazli
author_facet	Wei,Qi Xu,Junzeng Sun,Lu Wang,Haiyu Lv,Yuping Li,Yawei Hameed,Fazli
author_sort	Wei,Qi
title	Effects of straw returning on rice growth and yield under water-saving irrigation
title_short	Effects of straw returning on rice growth and yield under water-saving irrigation
title_full	Effects of straw returning on rice growth and yield under water-saving irrigation
title_fullStr	Effects of straw returning on rice growth and yield under water-saving irrigation
title_full_unstemmed	Effects of straw returning on rice growth and yield under water-saving irrigation
title_sort	effects of straw returning on rice growth and yield under water-saving irrigation
publisher	Instituto de Investigaciones Agropecuarias, INIA
publishDate	2019
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392019000100066
work_keys_str_mv	AT weiqi effectsofstrawreturningonricegrowthandyieldunderwatersavingirrigation AT xujunzeng effectsofstrawreturningonricegrowthandyieldunderwatersavingirrigation AT sunlu effectsofstrawreturningonricegrowthandyieldunderwatersavingirrigation AT wanghaiyu effectsofstrawreturningonricegrowthandyieldunderwatersavingirrigation AT lvyuping effectsofstrawreturningonricegrowthandyieldunderwatersavingirrigation AT liyawei effectsofstrawreturningonricegrowthandyieldunderwatersavingirrigation AT hameedfazli effectsofstrawreturningonricegrowthandyieldunderwatersavingirrigation
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Effects of straw returning on rice growth and yield under water-saving irrigation

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