Effects of film-mulched and dry-farming on lodging resistance of medium hybrid rice 88S/1128 at late growth stage was studied in this study. The result suggested that the increasing of lodging resistance of rice showe...Effects of film-mulched and dry-farming on lodging resistance of medium hybrid rice 88S/1128 at late growth stage was studied in this study. The result suggested that the increasing of lodging resistance of rice showed a trend of no film-mulched and water-farmingfilm-mulched and water-farmingno film-mulched and dry-farmingfilm-mulched and dry-faming. The lodging index of water-farming treatment decreased by 9.47%-24.10% compared to that of dry-farming treatment,while the lodging index of no film-mulched decreased by 14.68%-17.09% compared to that of film-mulched treatment; lodging index was significant or extremely significant negative related to resistant press per plant,transpiration rate,intercellular CO2 concentration and photosynthetic rate but extremely significant positive related to biomass per plant; the largest contributed factor in lodging was the plant biomass,while the factors had greatest contribution to lodging resistance showed an order of resistant press per planttranspiration rateintercellular CO2 concentrationphotosynthetic ratestomatal conductance.展开更多
[Objective]The aim was to solve the weeds existed in seedling period of alfalfa in Chongqing.[Method]The naked oat and common oat were selected.Through the analysis of determiners such as plant number,plant height,yie...[Objective]The aim was to solve the weeds existed in seedling period of alfalfa in Chongqing.[Method]The naked oat and common oat were selected.Through the analysis of determiners such as plant number,plant height,yield and weeds ratio,the oat type and sowing method were screened through all the accompany sowing crops to better control weeds in the seedling period of alfalfa.[Result]Compared with common oat,the tested naked oat as the companion crop of alfalfa seeding can prevent weeds more effectively;the proper companion-seeding disposal of alfalfa sowed in spring in Chongqing area was 15 kg/hm2 of alfalfa and 120 kg/hm2 of naked oat,sowing in strip in 40 cm row spacing;the proper mowing period of oat was during the time from May 11th to May 21st;the proper mowing period of alfalfa was ten days later.[Conclusion]Spring sowing oats with alfalfa can control seedling weeds effectively.展开更多
Objective] The purpose of this study was to evaluate the effects of five variables （steaming time, moisture content before inoculation, inoculation amount, fer-mentation temperature, fermentation time） on the sweetn...Objective] The purpose of this study was to evaluate the effects of five variables （steaming time, moisture content before inoculation, inoculation amount, fer-mentation temperature, fermentation time） on the sweetness of sweet oats, obtained the best fermentation conditions. [Method] Plackett-Burman （PB） was to evaluate the effects of five variables, and selected significant factors. The steepest ascent was used to approach the optimal response surface experimental area. The optimal fer-mentation condition was obtained by central composite design and response surface analysis. [Results] It was indicated that moisture content, inoculation amount and fer-mentation temperature had significant influences on the content of the reducing sugars. The optimal conditions of moisture content, inoculation amount and temper-ature were 45.26%, 0.014%（g/g） and 28 ℃, respectively. The predicted value of the reducing sugar content was 13.16 mg/g. [Conclusion] Under the optimal conditions, the content of the reducing sugars in the sweet oats could be up to 12.91 mg/g, which was on the whole consistent with the predictive maximum value.展开更多
[Objective] The aim was to explore the optimal levels of different factors influencing oat yield in Lhasa, Tibet. [Method] Orthogonal test was conducted to analyze oat cultivation technology in Tibet. [Result] Qingyi...[Objective] The aim was to explore the optimal levels of different factors influencing oat yield in Lhasa, Tibet. [Method] Orthogonal test was conducted to analyze oat cultivation technology in Tibet. [Result] Qingyin No.2 and Baiyan No. 8 were proved the optimal species to be grown in Lhasa with optimal sowing quantity at 150-180 kg/hm2. Sowing term is an extremely significant factor affecting growing season, and species and N fertilizer are significant factors. Al factors have none significant effects on hay yield. [Conclusion] The research provides theoretical refer-ences and technological supports for large-scale planting.展开更多
基金Supported by Project of Science&Technology of Grian Yield of China(2004BA520A01)~~
文摘Effects of film-mulched and dry-farming on lodging resistance of medium hybrid rice 88S/1128 at late growth stage was studied in this study. The result suggested that the increasing of lodging resistance of rice showed a trend of no film-mulched and water-farmingfilm-mulched and water-farmingno film-mulched and dry-farmingfilm-mulched and dry-faming. The lodging index of water-farming treatment decreased by 9.47%-24.10% compared to that of dry-farming treatment,while the lodging index of no film-mulched decreased by 14.68%-17.09% compared to that of film-mulched treatment; lodging index was significant or extremely significant negative related to resistant press per plant,transpiration rate,intercellular CO2 concentration and photosynthetic rate but extremely significant positive related to biomass per plant; the largest contributed factor in lodging was the plant biomass,while the factors had greatest contribution to lodging resistance showed an order of resistant press per planttranspiration rateintercellular CO2 concentrationphotosynthetic ratestomatal conductance.
文摘[Objective]The aim was to solve the weeds existed in seedling period of alfalfa in Chongqing.[Method]The naked oat and common oat were selected.Through the analysis of determiners such as plant number,plant height,yield and weeds ratio,the oat type and sowing method were screened through all the accompany sowing crops to better control weeds in the seedling period of alfalfa.[Result]Compared with common oat,the tested naked oat as the companion crop of alfalfa seeding can prevent weeds more effectively;the proper companion-seeding disposal of alfalfa sowed in spring in Chongqing area was 15 kg/hm2 of alfalfa and 120 kg/hm2 of naked oat,sowing in strip in 40 cm row spacing;the proper mowing period of oat was during the time from May 11th to May 21st;the proper mowing period of alfalfa was ten days later.[Conclusion]Spring sowing oats with alfalfa can control seedling weeds effectively.
基金Major science and technology projects in jiangxi province(2010ZX0100)Basic scientific research business expenses Incremental projects of Chinese academy of agricultural sciences(2013ZL013)~~
文摘Objective] The purpose of this study was to evaluate the effects of five variables （steaming time, moisture content before inoculation, inoculation amount, fer-mentation temperature, fermentation time） on the sweetness of sweet oats, obtained the best fermentation conditions. [Method] Plackett-Burman （PB） was to evaluate the effects of five variables, and selected significant factors. The steepest ascent was used to approach the optimal response surface experimental area. The optimal fer-mentation condition was obtained by central composite design and response surface analysis. [Results] It was indicated that moisture content, inoculation amount and fer-mentation temperature had significant influences on the content of the reducing sugars. The optimal conditions of moisture content, inoculation amount and temper-ature were 45.26%, 0.014%（g/g） and 28 ℃, respectively. The predicted value of the reducing sugar content was 13.16 mg/g. [Conclusion] Under the optimal conditions, the content of the reducing sugars in the sweet oats could be up to 12.91 mg/g, which was on the whole consistent with the predictive maximum value.
基金Supported by Modern Agricultural Industry Technology System(CARS-08-E-4)~~
文摘[Objective] The aim was to explore the optimal levels of different factors influencing oat yield in Lhasa, Tibet. [Method] Orthogonal test was conducted to analyze oat cultivation technology in Tibet. [Result] Qingyin No.2 and Baiyan No. 8 were proved the optimal species to be grown in Lhasa with optimal sowing quantity at 150-180 kg/hm2. Sowing term is an extremely significant factor affecting growing season, and species and N fertilizer are significant factors. Al factors have none significant effects on hay yield. [Conclusion] The research provides theoretical refer-ences and technological supports for large-scale planting.
