Ammonia volatilization(AV) from basal fertilizer with different nitrogen(N) types and application methods was investigated by the ventilation method in germination and early seedling stages during radish growth season...Ammonia volatilization(AV) from basal fertilizer with different nitrogen(N) types and application methods was investigated by the ventilation method in germination and early seedling stages during radish growth seasons in 2014. Four N fertilizer types, urea(U), ammonium bicarbonate(AB), ammonia sulfate(AS), and controlled urea formaldehyde(CUF) were applied through 5 cm depth placement(I) and 10 cm depth placement(II). The results showed that the N fertilizer type was the main factor that caused AV loss in germination and early seedling stages from the radish field. The highest and the lowest cumulative AV losses in germination and early seedling stages from the radish fields were 33.23 and 11.21 N kg/hm^2 for the treatments of AB+I and CUF+II, respectively, accounting for 60.40 and 26.40% of the N application for each treatment. The 10 cm deep placement of N reduced AV rates and lagged the AV process, and CUF significantly reduced ammonia volatilization. The data showed that the suitable N fertilizer type and application method for basal fertilizer were CUF and deep placement, respectively.Therefore, fertilizing with proper N fertilizer types and methods should be the efficient measures to mitigate AV losses from the radish field and will alleviate environment problems.展开更多
The components of glucosinolates( GSL) in the succulent roots and leaves of three kinds of fruity radish( Xinlimei,Super Zhengyan,and Shawo) were identified and analyzed by high performance liquid chromatography( HPLC...The components of glucosinolates( GSL) in the succulent roots and leaves of three kinds of fruity radish( Xinlimei,Super Zhengyan,and Shawo) were identified and analyzed by high performance liquid chromatography( HPLC). Results showed that there were nine kinds of glucosinolates in the succulent roots and leaves of three kinds of fruity radish,including six kinds of aliphatic glucosinolates( 4-methyl sulfinyl-3-butenyl glucosinolates,2-allyl glucosinolates,4-methyl sulfinyl butyl glucosinolates,5-methyl sulfinyl amyl glucosinolates,4-methyl n-butyl glucosinolates,4-methyl thio-3-butenyl glucosinolates) and three kinds of indole glucosinolates( 4-methoxy methyl indole glucosinolates,3-methyl indole glucosinolates,1-methoxy methyl indole glucosinolates),but there were significant differences in the content of glucosinolates between different varieties and organs. The total content of glucosinolates in succulent roots of three kinds of fruity radish was22 472. 84,13 585. 86,and 28 200. 70 μg/g DM respectively,and more than 95% were aliphatic glucosinolates. The content of glucosinolates in succulent roots was 4. 56,2. 71,and 4. 55 times of that in leaves of three kinds of fruity radish. Main aliphatic glucosinolates in succulent roots and leaves of three kinds of fruity radish were 4-methyl sulfinyl-3-butenyl glucosinolates,accounting for 90. 11%-93. 92% and63. 03%-73. 72% of total content of glucosinolates.展开更多
This paper studied the effect of reducing application of chemical fertilizer,increasing application of functional organic fertilizer and trace elements and fully using biological pesticides on physiological traits,yie...This paper studied the effect of reducing application of chemical fertilizer,increasing application of functional organic fertilizer and trace elements and fully using biological pesticides on physiological traits,yield and quality of radish. The results showed that applying functional organic fertilizer and trace elements and fully using biological pesticides could help to significantly improve the radish fleshy root yield,increase soluble sugar and vitamin C content,reduce crude fiber and nitrate content,but had no significant influence on radish moisture content,glucosinolates and chlorpyrifos content in organophosphorus pesticides.展开更多
基金partially provided by Hubei Natural Science Foundation“Research on the Mechanism of Soil Ammonia Volatilization for Seed Germination and Early Growth of Radish and Mitigation Strategies”Hubei Foundation of Modern Agricultural Industry Technology System and Bulk Vegetable Agricultural Technology System in China
文摘Ammonia volatilization(AV) from basal fertilizer with different nitrogen(N) types and application methods was investigated by the ventilation method in germination and early seedling stages during radish growth seasons in 2014. Four N fertilizer types, urea(U), ammonium bicarbonate(AB), ammonia sulfate(AS), and controlled urea formaldehyde(CUF) were applied through 5 cm depth placement(I) and 10 cm depth placement(II). The results showed that the N fertilizer type was the main factor that caused AV loss in germination and early seedling stages from the radish field. The highest and the lowest cumulative AV losses in germination and early seedling stages from the radish fields were 33.23 and 11.21 N kg/hm^2 for the treatments of AB+I and CUF+II, respectively, accounting for 60.40 and 26.40% of the N application for each treatment. The 10 cm deep placement of N reduced AV rates and lagged the AV process, and CUF significantly reduced ammonia volatilization. The data showed that the suitable N fertilizer type and application method for basal fertilizer were CUF and deep placement, respectively.Therefore, fertilizing with proper N fertilizer types and methods should be the efficient measures to mitigate AV losses from the radish field and will alleviate environment problems.
基金Supported by Wuhan City Huanghe Talents PlanSecond Batch Project for Modern Agricultural Industrial Technology System of Hubei Province
文摘The components of glucosinolates( GSL) in the succulent roots and leaves of three kinds of fruity radish( Xinlimei,Super Zhengyan,and Shawo) were identified and analyzed by high performance liquid chromatography( HPLC). Results showed that there were nine kinds of glucosinolates in the succulent roots and leaves of three kinds of fruity radish,including six kinds of aliphatic glucosinolates( 4-methyl sulfinyl-3-butenyl glucosinolates,2-allyl glucosinolates,4-methyl sulfinyl butyl glucosinolates,5-methyl sulfinyl amyl glucosinolates,4-methyl n-butyl glucosinolates,4-methyl thio-3-butenyl glucosinolates) and three kinds of indole glucosinolates( 4-methoxy methyl indole glucosinolates,3-methyl indole glucosinolates,1-methoxy methyl indole glucosinolates),but there were significant differences in the content of glucosinolates between different varieties and organs. The total content of glucosinolates in succulent roots of three kinds of fruity radish was22 472. 84,13 585. 86,and 28 200. 70 μg/g DM respectively,and more than 95% were aliphatic glucosinolates. The content of glucosinolates in succulent roots was 4. 56,2. 71,and 4. 55 times of that in leaves of three kinds of fruity radish. Main aliphatic glucosinolates in succulent roots and leaves of three kinds of fruity radish were 4-methyl sulfinyl-3-butenyl glucosinolates,accounting for 90. 11%-93. 92% and63. 03%-73. 72% of total content of glucosinolates.
基金Supported by the Second Batch of Modern Agricultural Industry Technology System Project in Hubei Province
文摘This paper studied the effect of reducing application of chemical fertilizer,increasing application of functional organic fertilizer and trace elements and fully using biological pesticides on physiological traits,yield and quality of radish. The results showed that applying functional organic fertilizer and trace elements and fully using biological pesticides could help to significantly improve the radish fleshy root yield,increase soluble sugar and vitamin C content,reduce crude fiber and nitrate content,but had no significant influence on radish moisture content,glucosinolates and chlorpyrifos content in organophosphorus pesticides.
