Effects of Irrigation and Straw Mulching on Microclimate Characteristics and Water Use Efficiency of Winter Wheat in North Chinas

Li, Quanqi; Yu-hai, Chen; Liu, Mengyu; Zhou, X. B.; Yu, Shuxun; Dong, Baodi

doi:10.1626/pps.11.161

Cited by 63 publications

(57 citation statements)

References 15 publications

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“…Li et al (2008) showed that straw mulching reduced the latent heat flux, thereby decreasing soil evaporation. Hence, a large amount of soil moisture could be retained by the soil with straw mulching, and this soil moisture could be absorbed by summer maize during the latter half of the growing season.…”

Section: Resultsmentioning

confidence: 99%

“…Hence, the essence of efficient water use was root and shoot equilibrium (Gao et al 2007). Straw mulching affects not only the soil moisture content but also soil temperature and soil nutrient accumulation and distribution (Yan et al 2007, Li et al 2008, Malhi et al 2011. Therefore, to understand the water consumption characteristics of summer maize with straw mulching more clearly, the regulation and control mechanisms of root and shoot equilibrium, as well as its interaction mechanisms under different soil and water conditions should be studied.…”

Section: Resultsmentioning

confidence: 99%

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Effects of straw mulching on water consumption characteristics and yield of different types of summer maize plants

Shen¹,

Zhao²,

Han³

et al. 2012

Plant Soil Environ.

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To develop rainfed agriculture in northern China, we conducted field experiments with three straw mulching rates (0, 6, and 12 t/ha) on two plant types (a compact type, Chaoshi1, and a flat type, Danyu86) during the summer maize-growing season in 2009 and 2010 to study soil moisture content, evapotranspiration, grain yield, and water-use efficiency (WUE). The results indicated that straw mulching could significantly (LSD, P < 0.05) improve soil moisture content at a depth of 20-80 cm below the ground surface during the anthesis-silking stage; however, at maturity, straw mulching decreased the soil moisture content at a depth of 0-60 cm below the ground surface. In 2009, straw mulching at the rate of 12 t/ha significantly (LSD, P < 0.05) increased the evapotranspiration in Chaoshi1 and Danyu86. In 2010, straw mulching at the rate of 6 t/ha significantly (LSD, P < 0.05) increased evapotranspiration in Danyu86 alone. The grain yields of Danyu86 in 2009 and Chaoshi1 in 2010 were significantly (LSD, P < 0.05) higher with straw mulching at the rate of 12 t/ha than on the application of other treatments. Irrespective of whether precipitation was concentrated during the beginning or the latter half of the summer maize growing stage, straw mulching increased the WUE of Chaoshi1, but not of Danyu86. These results indicated that under rainfed conditions in northern China, straw mulching could increase the grain yield and WUE of compact-type maize.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Effects of straw mulching on water consumption characteristics and yield of different types of summer maize plants

Shen¹,

Zhao²,

Han³

et al. 2012

Plant Soil Environ.

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“…A permanência da cobertura morta sobre a superfície do solo minimiza os riscos de erosão (CARVALHO et al, 2003;BABALOLA;OSHUNSANYA;DENARDIN et al, 2008), preserva a umidade do solo, mantendo um equilíbrio físico-químico de nutrientes para as culturas (ZHANG et al, 2005;LI et al, 2008). Ao contrário do que ocorre no sistema de preparo convencional, o solo em sistema plantio direto acumula mais carbono e nitrogênio (BAYER, et al, 2003;WOHLENBERG et al, 2004;PEREIRA et al, 2010; e, o não-revolvimento do solo favorece a biodiversidade, melhorando a porosidade e a proliferação de inimigos naturais de pragas e doenças (FERNANDES, 1995;ANDERSON, 2008;LOSS et al, 2009b).…”

Section: Introductionunclassified

Colonização micorrízica, densidade de esporos e diversidade de fungos micorrízicos arbusculares em solo de Cerrado sob plantio direto e convencional

et al. 2012

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ResumoA busca da sustentabilidade na produção agrícola através de manejos conservacionistas, como o sistema plantio direto, tem favorecido os processos bioquímicos do solo como dos fungos micorrízicos arbusculares (FMAs), os quais promovem um aumento expressivo da superfície específica de absorção do sistema radicular das plantas. Sendo assim, o objetivo deste trabalho foi avaliar a colonização micorrízica, densidade de esporos e a diversidade de FMAs na rizosfera de milho e soja cultivados sob plantio direto com diferentes plantas de cobertura e comparadas a uma área de preparo convencional e pousio, em Uberaba, MG. As culturas de milho e soja foram rotacionadas com milheto, crotalária e braquiária. O delineamento experimental foi em blocos casualizados, com parcelas subdivididas. O experimento foi implantado em 2000 e, em 2007 avaliou-se a colonização radicular por FMAs (COL) e densidade de esporos no solo (ESP) nas profundidades de 0,0-0,05 m e 0,05-0,10 m, já a avaliação da diversidade de FMAs foi na profundidade de 0,0-0,10 m. Verificou-se que houve efeito significativo das culturas sobre COL e ESP. Entretanto, o efeito das coberturas e do manejo foi verificado apenas em 0,0-0,05 m. As raízes de milho apresentam maiores porcentagens de COL e ESP quando comparado com a soja, para as coberturas de braquiária e milheto. A colonização micorrízica da soja e do milho na área de Cerrados foi acima de 80% para soja e 95% para o milho. O sistema de preparo convencional do solo apresentou o menor número de espécies de FMAs em relação às coberturas de milheto e braquiária, em sistema plantio direto com milho e soja. A análise de componentes principais com algumas variáveis químicas, físicas e biológicas do solo evidencia a separação das áreas avaliadas, sendo as variáveis COL e ESP eficientes na separação das áreas em cultivo, para as condições do presente estudo. Palavras-chave: Sistema plantio direto, culturas do milho e da soja, plantas de cobertura, indicadores de qualidade do solo 1 Engº Agrº, Doutorando em Fitotecnia, Universidade Federal Rural do Rio de Janeiro,

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“…Some researchers studied the effects of deficit irrigation on the evapotranspiration (Eberbach and Pala 2005), water use efficiency (Lauenroth et al 2000, Angus and Van Herwaarden 2001, Li et al 2008b) and yield (Pan et al 2003) of winter wheat; Zhang et al (1999) discussed the relationship between evapotranspiration and yield. These studies, however, have not reported the integrated effects of the deficit irrigation on the radiation use efficiency (RUE) in North China.…”

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confidence: 99%

Radiation use efficiency and yield of winter wheat under deficit irrigation in North Chin

Han¹,

Li²,

Ning³

et al. 2008

PLANT SOIL ENVIRON

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Water stress is a frequent and critical limit to wheat (Triticum aestivum L.) production in North China. It has been shown that photosynthetic active radiation (PAR) is closely related to crop production. An experiment was conducted to investigate the effects of deficit irrigation and winter wheat varieties on the PAR capture ration, PAR utilization and grain yield. Field experiments involved Jimai 20 (J; high yield variety) and Lainong 0153 (L; dryland variety) with non-irrigation and irrigated at jointing stage. The results showed that whether irrigated at jointing stage or not, there was no significant difference between J and L with respect to the amount of PAR intercepted by the winter wheat canopies. However, significant differences were observed between the varieties with respect to the amount of PAR intercepted by plants that were 60-80 cm above the ground surface. This result was mainly caused by the changes in the vertical distributions of leaf area index (LAI). As a result, the effects of the varieties and deficit irrigation on the radiation use efficiency (RUE) and grain yield of winter wheat were due to the vertical distribution of PAR in the winter wheat canopies. During the late growing season of winter wheat, irrespective of the irrigation regime, the RUE and grain yield of J were significantly (LSD, P < 0.05) higher than those of L. These results suggest that a combination of deficit irrigation and a suitable winter wheat variety should be applied in North China.

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Effects of Irrigation and Straw Mulching on Microclimate Characteristics and Water Use Efficiency of Winter Wheat in North Chinas

Cited by 63 publications

References 15 publications

Effects of straw mulching on water consumption characteristics and yield of different types of summer maize plants

Effects of straw mulching on water consumption characteristics and yield of different types of summer maize plants

Colonização micorrízica, densidade de esporos e diversidade de fungos micorrízicos arbusculares em solo de Cerrado sob plantio direto e convencional

Radiation use efficiency and yield of winter wheat under deficit irrigation in North Chin

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