scholarly journals Effects on Soil Fertility and Microbial Populations of Broadcast-Transplanting Rice Seedlings in High Standing-Stubble Under No-Tillage in Paddy Fields

10.5772/27625 ◽  
2012 ◽  
Author(s):  
Ren Wan-Jun ◽  
Huang Yun ◽  
Yang Wen-Yu
Keyword(s):  
Soil Fertility ◽  
Paddy Fields ◽  
Microbial Populations ◽  
No Tillage ◽  
Rice Seedlings

scholarly journals Effects of different returning method combined with decomposer on decomposition of organic components of straw and soil fertility

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Xiao Wang ◽  
Xuexin Wang ◽  
Peng Geng ◽  
Qian Yang ◽  
Kun Chen ◽  
...  
Keyword(s):  
Organic Carbon ◽  
Soil Fertility ◽  
Decomposition Rate ◽  
Microbial Biomass Carbon ◽  
No Tillage ◽  
Short Term ◽  
Straw Decomposition ◽  
Short Period ◽  
Straw Return ◽  
Forms Of Carbon

AbstractIn view of the problems of low straw decomposition rates and reduced soil fertility in southern Liaoning, China, we investigated the effects of no-tillage mode (NT), deep loosening + deep rotary tillage mode (PT), rotary tillage mode (RT) and the addition of decomposing agent (the next is called a decomposer) (NT + S, PT + S, RT + S) on the decomposition proportion of straw, respectively, by using the nylon net bag method in combination with 365-day field plot experiments. The decomposition rules of cellulose, hemicellulose and lignin as well as the dynamics of soil organic carbon (SOC), soil microbial biomass carbon (MBC) and soil dissolved organic carbon (DOC) in straw returned to the field for 15, 35, 55, 75, 95, 145 and 365 days were analyzed. The results showed that in the short term, the decomposition of straw was better in both the rotray tillage and deep loosening + deep rotary modes than in the no-tillage mode, and the addition of decomposer significantly promoted the decomposition of straw and the release of carbon from straw, among them, the RT + S treatment had the highest straw decomposition proportion and carbon release proportion in all sampling periods. After a one year experimental cycle, the RT + S treatment showed the highest proportion of cellulose, hemicellulose and lignin decomposition with 35.49%, 84.23% and 85.50%, respectively, and soil SOC, MBC and DOC contents were also higher than the other treatments with an increase of 2.30 g kg−1, 14.22 mg kg−1 and 25.10 mg kg−1, respectively, compared to the pre-experimental soil. Our results show that in the short term, to accelerate the decomposition rate of returned straw and increase the content of various forms of carbon in soil, rotary tillage can be used to return the straw to the field, while also spraying straw decomposer on its surface. This experiment used a new straw decomposer rich in a variety of microorganisms, combined with the comparison of a variety of straw return modes, and in-depth study of straw decomposition effects of cellulose, hemicellulose and lignin. Thus, a scheme that can effectively improve the decomposition rate of straw and the content of various forms of organic carbon in soil within a short period of time was explored to provide theoretical support for the southern Liaoning.

scholarly journals No-tillage for flooded rice in Brazilian subtropical paddy fields: history, challenges, advances and perspectives

2021 ◽  
Vol 45 ◽  
Author(s):  
Rogério Oliveira de Sousa ◽  
Filipe Selau Carlos ◽  
Leandro Souza da Silva ◽  
Walkyria Bueno Scivittaro ◽  
Pablo Lacerda Ribeiro ◽  
...  
Keyword(s):  
Paddy Fields ◽  
No Tillage ◽  
Flooded Rice

Effects of nitrogen management on NH3volatilization and nitrogen use efficiency under no-tillage paddy fields

2013 ◽  
Vol 33 (18) ◽  
pp. 5556-5564 ◽  
Author(s):  
马玉华 MA Yuhua ◽  
刘兵 LIU Bing ◽  
张枝盛 ZHANG Zhisheng ◽  
郑大 ZHENG Da ◽  
周亮 ZHOU Liang ◽  
...  
Keyword(s):  
Nitrogen Use Efficiency ◽  
Nitrogen Management ◽  
Paddy Fields ◽  
No Tillage ◽  
Nitrogen Use ◽  
Use Efficiency

scholarly journals Assessment of Two Soil Fertility Indexes to Evaluate Paddy Fields for Rice Cultivation

2017 ◽  
Vol 9 (8) ◽  
pp. 1299 ◽  
Author(s):  
Bahareh Delsouz Khaki ◽  
Naser Honarjoo ◽  
Naser Davatgar ◽  
Ahmad Jalalian ◽  
Hosein Torabi Golsefidi
Keyword(s):  
Soil Fertility ◽  
Rice Cultivation ◽  
Paddy Fields

scholarly journals Effects of the application of biochar on soil fertility status, and nutrition and yield of onion grown in a no-tillage system

2021 ◽  
pp. 1-16
Author(s):  
Fábio Satoshi Higashikawa ◽  
Carlos Alberto Silva ◽  
Carla Eloize Carducci ◽  
Keiji Jindo ◽  
Claudinei Kurtz ◽  
...  
Keyword(s):  
Soil Fertility ◽  
No Tillage ◽  
Fertility Status ◽  
Tillage System ◽  
Soil Fertility Status

scholarly journals EVALUASI STATUS KESUBURAN N P K TANAH SAWAH TADAH HUJAN DI KECAMATAN BERINGIN KABUPATEN DELI SERDANG

2019 ◽  
Vol 5 (1) ◽  
Author(s):  
Fitra Syawal Harahap
Keyword(s):  
Soil Fertility ◽  
Soil Samples ◽  
Rice Fields ◽  
Paddy Fields ◽  
Soil Parameters ◽  
Urea Fertilizer ◽  
Fertility Status ◽  
Rainfed Rice ◽  
High Soil ◽  
Soil Fertility Status

Rainfed rice fields are paddy fields whose water sources depend on rainfall without permanent irrigation structures. This study aimed to identify fertility variables that are obstacles in Beringin Subdistrict by evaluating soil fertility status and reviewing management alternatives that are in accordance with the soil fertility status found in rainfed lowland rice fields in several villages in Beringin Subdistrict, Deli Serdang District.This research was a phenomenological qualitative descriptive study with land survey and supported by qualitative laboratory analysis. The taking of soil samples was carried out in the survey area sequentially based on the location of the estimated nature of the soil with the purposive random sampling method. The taking of soil samples was taken in the upper layer at the top soil depth of 0-20 cm, and the coordinates of the point were recorded using GPS.The fertility status of paddy fields in BeringinSubdistrict was classified as high, medium, and low soil fertility status. High soil fertility in P-total soil parameters in all villages, for medium land in K2O parameters in all villages, while for low land status in N-total land parameters in all villages. Prompts for giving urea fertilizer without organic matter as much as 250 kg ha-1, with 5 tons of straw ha-1 adding urea fertilizer as much as 230 kg ha-1 and using 2 tons of manure ha-1 giving urea fertilizer as much as 225 kg ha-1.P fertilization in medium status paddy fields is 75 kg SP-36 ha-1, and high P fertility status is 50 kg ha-1SP-36. K fertilizer application for high soil fertility status is 50 kg ha-1. Prompts for organic fertilizer using compost of rice straw equal to 5 tons ha-1 and or manure 2 tons ha-1. Keywords: Status of N,P,K, Rainfed Rice Field, Beringin District

scholarly journals The Effects of Rape Residue Mulching on Net Global Warming Potential and Greenhouse Gas Intensity from No-Tillage Paddy Fields

2014 ◽  
Vol 2014 ◽  
pp. 1-9 ◽  
Author(s):  
Zhi-Sheng Zhang ◽  
Cou-Gui Cao ◽  
Li-Jin Guo ◽  
Cheng-Fang Li
Keyword(s):  
Global Warming ◽  
Greenhouse Gas ◽  
Oilseed Rape ◽  
Global Warming Potential ◽  
Growing Season ◽  
Central China ◽  
Paddy Fields ◽  
No Tillage ◽  
Greenhouse Gas Intensity ◽  
Rice Growing Season

A field experiment was conducted to provide a complete greenhouse gas (GHG) accounting for global warming potential (GWP), net GWP, and greenhouse gas intensity (GHGI) from no-tillage (NT) paddy fields with different amounts of oilseed rape residue mulch (0, 3000, 4000, and 6000 kg dry matter (DM) ha−1) during a rice-growing season after 3 years of oilseed rape-rice cultivation. Residue mulching treatments showed significantly more organic carbon (C) density for the 0–20 cm soil layer at harvesting than no residue treatment. During a rice-growing season, residue mulching treatments sequestered significantly more organic C from 687 kg C ha−1 season−1to 1654 kg C ha−1 season−1than no residue treatment. Residue mulching significantly increased emissions of CO2and N2O but decreased CH4emissions. Residue mulching treatments significantly increased GWP by 9–30% but significantly decreased net GWP by 33–71% and GHGI by 35–72% relative to no residue treatment. These results suggest that agricultural economic viability and GHG mitigation can be achieved simultaneously by residue mulching on NT paddy fields in central China.

Sign in / Sign up

Export Citation Format

Share Document