Open AccessWater saving eco-friendly technology of rice irrigation
Author(s) -
И. П. Кружилин,
Н. Н. Дубенок,
М. А. Ganiev,
В. В. Мелихов,
К. А. Родин,
S. D. Fomin
Publication year - 2019
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/341/1/012100
Subject(s) - irrigation , waterlogging (archaeology) , environmental science , sowing , deficit irrigation , agronomy , fertilizer , drainage , irrigation management , biology , ecology , wetland
The results of research on the development of less water-intensive rice irrigation technology with periodic irrigation, allowing to reduce the cost of irrigation water in 3-5 times are presented. This irrigation technology solves a number of environmental problems associated with the formation of water deficit in the sources of irrigation, the water table rise, salinization, waterlogging, acidification and utilization of polluted waste and drainage water. During the development of water-saving technologies of rice irrigation special attention is paid to the development of high crops and systems of plant protection from weeds. The article provides recommendations for maintaining a less intensive water regime of soil with a humidity not lower than 80% HB from sowing to the end of the tillering stage in a layer of 0.4 m with a subsequent increase to 0.6 m, from wax to full ripeness of grain not lower than 70% HB. The combination of such water regime with fertilizer rate N 109 P 62 K 75 provides a rice yield of 5.0 t/ha, a rate of N 131 P 74 K 90 – 6.0 t/ha and a rate of N 157 P 90 K 108 – 7.0 t/ha.