scholarly journals Nitrate Nitrogen Content of Brown Rice by Lowland, Upland and Upland Polyethylene Film Mulching Cultures

1977 ◽  
Vol 46 (4) ◽  
pp. 510-515
Author(s):  
Hirokadzu TAIRA ◽  
Harue TAIRA ◽  
Fumio FURUSAWA
Keyword(s):  
Nitrogen Content ◽  
Nitrate Nitrogen ◽  
Brown Rice ◽  
Polyethylene Film ◽  
Film Mulching

scholarly journals Protein Content of Brown Rice by Upland Polyethylene Film Mulching Culture

1972 ◽  
Vol 41 (2) ◽  
pp. 160-165 ◽  
Author(s):  
Hirokadzu TAIRA ◽  
Harue TAIRA ◽  
Fumio FURUSAWA
Keyword(s):  
Protein Content ◽  
Brown Rice ◽  
Polyethylene Film ◽  
Film Mulching

Quantitative trait loci analysis of nitrate-nitrogen content in Italian ryegrass (Lolium multiflorum Lam.)

Euphytica ◽  
2021 ◽  
Vol 217 (1) ◽  
Author(s):  
Wenqing Tan ◽  
Di Zhang ◽  
Nana Yuyama ◽  
Jun Chen ◽  
Shinichi Sugita ◽  
...  
Keyword(s):  
Quantitative Trait Loci ◽  
Nitrogen Content ◽  
Quantitative Trait ◽  
Nitrate Nitrogen ◽  
Lolium Multiflorum ◽  
Italian Ryegrass ◽  
Trait Loci

scholarly journals Estimation of the Effect of Soil Texture on Nitrate-Nitrogen Content in Groundwater Using Optical Remote Sensing

2011 ◽  
Vol 8 (8) ◽  
pp. 3416-3436 ◽  
Author(s):  
Yongyoot Witheetrirong ◽  
Nitin Kumar Tripathi ◽  
Taravudh Tipdecho ◽  
Preeda Parkpian
Keyword(s):  
Remote Sensing ◽  
Nitrogen Content ◽  
Soil Texture ◽  
Nitrate Nitrogen ◽  
Optical Remote Sensing

Effects of Polyethylene Film Mulching on Growth and Yield of Green Soybean in Early-Direct Sowing Cultivation in Upland Field Converted from Rice Paddy in the Hokuriku District

2011 ◽  
Vol 80 (2) ◽  
pp. 213-219
Author(s):  
Katsuyuki Katayama ◽  
Tatsuo Hosono ◽  
Hisashi Hosokawa ◽  
Yukiharu Shioya ◽  
Mikio Nomura
Keyword(s):  
Rice Paddy ◽  
Polyethylene Film ◽  
Growth And Yield ◽  
Film Mulching ◽  
Upland Field ◽  
Direct Sowing

The effects of ammonium and nitrate nitrogen on the growth of perennial rye grass

1936 ◽  
Vol 26 (2) ◽  
pp. 249-257 ◽  
Author(s):  
A. H. Lewis
Keyword(s):  
Nitrogen Content ◽  
Nitrate Nitrogen ◽  
Ammonium Nitrogen ◽  
Early Stages ◽  
Rye Grass

The results show clearly a more rapid and greater uptake of ammonium than of nitrate nitrogen by perennial rye grass grown in a sand-bentonite medium of pH 7·61. The extent to which the extra uptake with added ammonia was reflected in increased yields was dependent upon the age of the grass.Except in the very early stages the percentage nitrogen content of the herbage was higher where nitrate nitrogen was applied than where ammonium nitrogen was applied. This indicates that any nitrate absorbed by the plant was less, efficient in increasing yields than was ammonium nitrogen.The percentage P205 content of the grass was higher where the nitrogen was applied in the ammoniacal form than where it was applied as nitrate, and it appears that this greater P205 uptake with ammonium nitrogen resulted in increased growth.

The Effect of Human Activity on the Distribution of Soil Nitrate Nitrogen in Unsaturated Zone

2013 ◽  
Vol 790 ◽  
pp. 202-205
Author(s):  
Hui Yan Gao ◽  
Lu Hua Yang ◽  
Tian Li ◽  
Zi Peng Guo
Keyword(s):  
Soil Moisture ◽  
Nitrogen Content ◽  
Human Activity ◽  
Soil Profile ◽  
Nitrate Nitrogen ◽  
Root Zone ◽  
Deep Layer ◽  
Soil Layer ◽  
Growth Period ◽  
Soil Nitrate

Soil moisture and nitrate nitrogen were measured respectively in planting area and non-planting area in RANZHUANG experiment station from 2011 to 2012. The effect of human activity on soil moisture and nitrate nitrogen was analyzed. The results show that soil moisture content varies from 8.61% to 30.09% within 0~250cm depth and is tended to be stable below 250cm deep layer in non-planting area. The distribution of soil nitrate nitrogen is a single peak curve, the peak moves downward at a speed of 0.81cm/d in percolation of rainfall. Soil moisture varies form 21.23% to 41.67% within 0~400cm depth and is tended to be stable below 400cm deep layer in planting area. Nitrate nitrogen is mainly accumulated at 0~100cm deep soil layer in the wheat growth period. In the maize growth period, the distribution of nitrate nitrogen is double peak curve in 0~500cm soil profile. The upper peak occurs at 40~100cm soil layer, the peak of nitrate nitrogen content is between 26.7~54.6mg/kg; the lower emerges at 150~260cm soil profile, the value is between 36.7~106.36mg/kg. Deep percolation of the nitrate nitrogen is obvious due to unreasonable irrigation and fertilization. The nitrate nitrogen content accounts for 52.3% of the total nitrate nitrogen below the root zone soil, which is a potential contamination source of groundwater.

Study on the Effects of Nitrogen Pollution to the Soil and Groundwater

2013 ◽  
Vol 437 ◽  
pp. 1019-1022 ◽  
Author(s):  
Xiao Hui Lu ◽  
Yang Wang
Keyword(s):  
Nitrogen Content ◽  
Nitrate Nitrogen ◽  
Flow Direction ◽  
Ammonium Nitrogen ◽  
Nitrogen Pollution ◽  
Monitoring Point ◽  
River Bank ◽  
The North ◽  
Geological Conditions ◽  
Nitrite Nitrate

Xuzhou city lies on the north of Jiangsu province, which geological conditions are complex, water resources are deficient and environment is vulnerable. At present, water pollution in Kui river area is very serious; Kui River nitrogen pollution had affected Coastal soil and chemical environment of groundwater. The monitoring sections are elected in the seriously polluted river, and downstream at the banks of river decorates with six monitoring sections. Each section from the river bank of 50m, 100m, 200m, 500m, 1000m, 1500m is arranged of monitoring points respectively, and each monitoring point is monitored for sampling test at different depths. The monitoring results of surface water showed that the content of ammonia-nitrite-nitrate was a decreasing trend along the flow direction. The nitrate nitrogen content would decrease further in December while the ammonium nitrogen content was on the rise, showing that the supplement of nitrogen pollution resources was still insufficient when the denitrification was stronger. The content of ammonium and nitrate nitrogen in soil was higher, and had some regular change features with the change of depth.

scholarly journals Effects of Polyethylene Film Mulching and Planting Densities on Growth and Yield of Proso Millet (Panicum miliaceum L.)

2015 ◽  
Vol 60 (2) ◽  
pp. 212-216 ◽  
Author(s):  
Ki-Youl Ju ◽  
◽  
Su-Min Jo ◽  
Hang-Won Kang ◽  
Young-Son Cho ◽  
...  
Keyword(s):  
Polyethylene Film ◽  
Growth And Yield ◽  
Panicum Miliaceum ◽  
Proso Millet ◽  
Film Mulching

scholarly journals Long-term Dynamics of Ammonia Nitrogen Content and Runoff in the muddle Amur Water

2015 ◽  
pp. 33-41
Author(s):  
Keyword(s):  
Nitrogen Content ◽  
River Runoff ◽  
Nitrate Nitrogen ◽  
Ammonia Nitrogen ◽  
Songhua River ◽  
Runoff Changes ◽  
The Songhua River

The long-term dynamic of the content and runoff of ammonia nitrogen in the water of the Middle Amur are discussed. There are decreasing of ammonia runoff in 1.4 times in comparison with 1981-2000, and dominance of nitrate nitrogen in runoff of mineral forms in recent years. Trends in runoff changes are due to transformation on the watershed. At present anthropogenic components of runoff is formed by the Songhua River runoff and is more pronounced in the wintertime.

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