The Experts below are selected from a list of 26658 Experts worldwide ranked by ideXlab platform
Zhenggui Wei - One of the best experts on this subject based on the ideXlab platform.
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Role of straw mulching in non-continuously flooded Rice Cultivation
Agricultural Water Management, 2006Co-Authors: Jiangtao Qin, Bin Zhang, Zhenggui WeiAbstract:Abstract Rice ( Oryza sativa L.) Cultivation under non-flooded (NF) condition is a new alternative to the conventional flooded (CF) Rice Cultivation system in the regions where rainfall and fresh water resources are limited. Non-flooded Rice Cultivation may mediate Rice growth performance and mulching may be good practice to reduce evapotranspiration and increase water use efficiency (WUE). The research objectives of this study were to investigate the effects of non-flooded Cultivation with straw mulching on the Rice agronomic traits and water use efficiency of the second Rice cropping season (late Rice). The treatments were conventional flooded Rice Cultivation, non-flooded Rice Cultivations without (NF-ZM) and with Rice straw mulching (NF-SM). Irrigation water was 19950 m 3 ha −1 in 2003 and 15,850 m 3 ha −1 in 2004 in the CF treatments and 7200 m 3 ha −1 in 2003 and 5045 m 3 ha −1 in 2004 in the non-flooded Rice fields (NF-ZM and NF-SM treatments). The field measurements showed that water seepage was 13,442 m 3 ha −1 in the CF treatment, 5510 m 3 ha −1 in the NF-ZM treatment and 5424 m 3 ha −1 in the NF-SM treatment. Rice straw mulching decreased evapotranspiration by 33% and 63% (in 2003), 36.5% and 57.1% (in 2004) to the NF-ZM treatment and CF treatment, respectively. Compared with the NF-ZM treatment, mulch application significantly increased the leaf area per plant, main root length, tap root length and root dry weight per plant of crop. The yield of the NF-SM treatment (2003: 6489 kg/hm 2 ; 2004: 8574.8 kg/hm 2 ) was similar with the value of the CF treatment (2003: 6811.5; 2004: 8630.5 kg/hm 2 ), and much higher than the NF-ZM treatment (2003: 4716; 2004: 6394.8 kg/hm 2 ). The order of irrigation water use efficiency (IWUE) and water use efficiency were as follows: NF-SM > NF-ZM > CF.
Hu Feng - One of the best experts on this subject based on the ideXlab platform.
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Changes in soil microbial properties and nematode assemblage over time during Rice Cultivation: Changes in soil microbial properties and nematode assemblage over time during Rice Cultivation
Biodiversity Science, 2013Co-Authors: Liu Yudi, Chen Xiaoyun, Liu Manqiang, Qin Jiangtao, Li Huixin, Hu FengAbstract:The properties of red soil may change over time when paddy fields are developed on what was previously dry land. The effect of Rice Cultivation duration on soil invertebrates is unknown. Five chronosequences of Rice Cultivation (1, 10, 20, 50 and 100 years) were selected to investigate the temporal changes of soil microbiological properties and nematode assemblages. The results showed that soil microbial properties (microbial biomass C, microbial biomass N, basal respiration), nutrient availability (mineral N and P), nematode abundance and richness of nematode genera generally increased with the duration of Rice Cultivation. Notably, most soil measurements peaked after 50 years of Cultivation (P
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Soil Labile Organic Carbon as Affected by Non-flooded Rice Cultivation with Straw Mulching Under Different Tillages
2011Co-Authors: Hu FengAbstract:【Objective】 The objective of this study was to investigate the characteristics of soil total organic carbon,labile organic carbon and carbon pool management index under non-flooded Rice Cultivation with straw mulching,and no-tillage and non-flooded Rice Cultivation with straw mulching.【Method】 A field experiment was conducted since 2003 in double-Rice cropping system in the Rice Yuanzhong Farm in Yujiang County,Jiangxi Province in southeast China.Soil samples at 0-15 cm depth were collected at the late-season Rice harvest period in 2007,and contents of soil total organic carbon and different fractions of labile organic carbon under different Rice Cultivations were determined.The Rice Cultivations included conventional flooded Rice Cultivation(CF),non-flooded Rice Cultivation with zero straw mulching(ZM),non-flooded Rice Cultivation with straw mulching(SM),no-tillage and non-flooded Rice Cultivation with zero straw mulching(N-ZM),and no-tillage and non-flooded Rice Cultivation with straw mulching(N-SM).【Result】 Compared with CF,SM and N-SM could significantly increase soil total organic carbon content,particulate organic carbon(53-2 000 μm) content,hot water-extractable organic carbon content,readily oxidizable organic carbon(oxidized by 333 mmol·L-1 KMnO4) content,and the percentage of labile organic carbon to soil total organic carbon,and soil organic carbon pool management index(CPMI).However,ZM could significantly decrease the parameters mentioned above compared to CF.【Conclusion】 As a novel water-saving technique and straw management,SM and N-SM applied to late-season Rice cropping system might be an alternative to CF for improving and increasing soil fertility under double-Rice cropping system,in the seasonal drought region of southeast China.
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Evaluation of comprehensive benefit on water-saving Rice Cultivation patterns in seasonal droughts hilly region of southern China
Journal of Zhejiang University Agriculture and Life Sciences, 2008Co-Authors: Hu FengAbstract:Based on the season droughts and situation of Rice Cultivation in hilly region of southern China,the analytic hierarchical process theory is applied to establish a mathematical model and indicators system for evaluating the comprehensive benefits of water-saving Rice Cultivation patterns.The evaluation indictors system is proposed abiding by principles of being scientific,practical and concise.The indicators system includes three aspects that reflect the primary benefits of water-saving Rice Cultivation patterns;there are economic,social and eco-environmental benefits.The evaluation model and the indicators system were carried out to evaluate synthetically the comprehensive benefit of water-saving Rice Cultivation patterns.The three demonstration patterns of water-saving Rice Cultivation(the water-saving irrigation double cropping Rice pattern,the double cropping Rice pattern of flood-drought Cultivation,and water-saving Rice Cultivation pattern of Rice and rape rotation) in the native "863" special project and the conventional double cropping Rice pattern were taken as research projects in seasonal droughts hilly region of southern China.The evaluation results indicate that the integrated benefits of the water-saving Rice Cultivation patterns were higher than that of the conventional double cropping Rice pattern,especially of water-saving Rice Cultivation pattern of Rice and rape rotation.Therefore,the application of water-saving Rice Cultivation pattern of Rice and rape rotation has a promising future,and furthermore,the evaluation model can be served as theoretical evidence for the management of,as well as further research on,water-saving Rice Cultivation patterns in seasonal droughts hilly region of southern China.
Jiangtao Qin - One of the best experts on this subject based on the ideXlab platform.
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Role of straw mulching in non-continuously flooded Rice Cultivation
Agricultural Water Management, 2006Co-Authors: Jiangtao Qin, Bin Zhang, Zhenggui WeiAbstract:Abstract Rice ( Oryza sativa L.) Cultivation under non-flooded (NF) condition is a new alternative to the conventional flooded (CF) Rice Cultivation system in the regions where rainfall and fresh water resources are limited. Non-flooded Rice Cultivation may mediate Rice growth performance and mulching may be good practice to reduce evapotranspiration and increase water use efficiency (WUE). The research objectives of this study were to investigate the effects of non-flooded Cultivation with straw mulching on the Rice agronomic traits and water use efficiency of the second Rice cropping season (late Rice). The treatments were conventional flooded Rice Cultivation, non-flooded Rice Cultivations without (NF-ZM) and with Rice straw mulching (NF-SM). Irrigation water was 19950 m 3 ha −1 in 2003 and 15,850 m 3 ha −1 in 2004 in the CF treatments and 7200 m 3 ha −1 in 2003 and 5045 m 3 ha −1 in 2004 in the non-flooded Rice fields (NF-ZM and NF-SM treatments). The field measurements showed that water seepage was 13,442 m 3 ha −1 in the CF treatment, 5510 m 3 ha −1 in the NF-ZM treatment and 5424 m 3 ha −1 in the NF-SM treatment. Rice straw mulching decreased evapotranspiration by 33% and 63% (in 2003), 36.5% and 57.1% (in 2004) to the NF-ZM treatment and CF treatment, respectively. Compared with the NF-ZM treatment, mulch application significantly increased the leaf area per plant, main root length, tap root length and root dry weight per plant of crop. The yield of the NF-SM treatment (2003: 6489 kg/hm 2 ; 2004: 8574.8 kg/hm 2 ) was similar with the value of the CF treatment (2003: 6811.5; 2004: 8630.5 kg/hm 2 ), and much higher than the NF-ZM treatment (2003: 4716; 2004: 6394.8 kg/hm 2 ). The order of irrigation water use efficiency (IWUE) and water use efficiency were as follows: NF-SM > NF-ZM > CF.
June-suh Cho - One of the best experts on this subject based on the ideXlab platform.
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Establishment of optimal barley straw biochar application conditions for Rice Cultivation in a paddy field
Environmental Geochemistry and Health, 2019Co-Authors: S. W. Kang, D.c. Seo, Yong Sik Ok, S.h. Kim, J.-h. Park, June-suh ChoAbstract:This study was conducted to establish the optimal application conditions of barley straw biochar (BC) for Rice Cultivation and to determine the effects of combined application of BC and inorganic fertilizer (IF) on Rice Cultivation in a paddy field. Based on the characteristics of Rice growth in pot-based experiments, the selected optimal application conditions of BC were application of 20 ton ha^−1 at 14 days before Rice transplanting. The effects of BC application on Rice Cultivation in a paddy field when using those conditions were then evaluated. Each treatment was separated by a control (Cn), IF, BC, and combined BC + IF treatments, respectively. The Rice yields in the BC + IF treatment were 38.6, 21.7, and 24.5% greater than those in the Cn, IF, and BC treatments, respectively. In addition, yield components of Rice were significantly improved in the BC + IF treatment relative to the other treatments. Following Rice harvest, soil status was improved, showing greater soil aggregation stability, decreased bulk density, and increased porosity in the BC-treated areas compared to those in the Cn- and IF-treated areas. At the time of Rice harvesting, soil chemical properties such as pH, EC, SOC, TN, Avail. P_2O_5, and CEC in the BC-treated areas were improved over those in other areas. The results of this study indicate that using BC as a soil amendment is effective at improving Rice Cultivation and can benefit the soil environment.
Charles E. Taylor - One of the best experts on this subject based on the ideXlab platform.
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EFFECT OF Rice Cultivation PATTERNS ON MALARIA VECTOR ABUNDANCE IN Rice-GROWING VILLAGES IN MALI
The American journal of tropical medicine and hygiene, 2007Co-Authors: Maria A. Diuk-wasser, Mahamoudou B. Touré, Guimogo Dolo, Magaran Bagayoko, Nafoman Sogoba, Ibrahim Sissoko, Sekou F. Traore, Charles E. TaylorAbstract:Irrigation for Rice Cultivation increases the production of Anopheles gambiae, the main vector of malaria in Mali. Mosquito abundance is highly variable across villages and seasons. We examined whether Rice Cultivation patterns mapped using remotely sensed imagery can account for some of this variance. We collected entomologic data and mapped land use around 18 villages in the two cropping seasons during two years. Land use classification accuracy ranged between 70% and 86%. The area of young Rice explained 86% of the inter-village variability in An. gambiae abundance in August before the peak in malaria transmission. Estimating Rice in a 900-meter buffer area around the villages resulted in the best correlation with mosquito abundance, larger buffer areas were optimum in the October and dry season models. The quantification of the relationship between An. gambiae abundance and Rice Cultivation could have management applications that merit further study.
