The article presents a study of water consumption of rice crops during periodic irrigation in various interphase periods of the growing season. The experiments were carried out on a plot of 21.2 hectares in the rice-growing enterprise of the RBF “Krasnoarmeysky”. The object of the study is an intensive variety of Rapan rice of Russian selection. The subject of the study is the water regime during the growing season of rice. It was found that the transition to intermittent irrigation during the growing season of rice “germination-tillering”, “loading-flowering” and “maturation” allowed to reduce the irrigation rate by 11.4, 5.1, 1.5%, respectively, compared with traditional methods of rice irrigation. The results of harvesting rice grains showed that the average yield according to the experiment was 75.7 c/ha, which is more than in the control by 1.2 c/ha. Additional profit from increasing the yield on the experimental variants ranged from 1,440 rubles/ha to 2,880 rubles/ha, net profit - from 480 rubles/ha to 960 rubles/ha. The total economic effect of the introduction of the pulse irrigation mode into production in various interphase periods of rice cultivation ranged from 549.83 rubles/ha to 1490.71 rubles/ha.
The article presents studies of the soil-reclamation state of rice agricultural landscapes of Krasnodar Territory using the example of the Chernoyerovskaya irrigation system. The direction of changes in soil salinity over a long-term period was revealed. In the framework of monitoring the state of rice soils, salt survey was carried out. The degree, type and causes of their salinization have been determined, the relationship between the salt regime of soils and the regime of the level and chemical composition of groundwater has been established. Recommendations for managing the fertility of rice agricultural landscapes are given.
The purpose of the research is to identify the impact of sprinkler irrigation in rice crop rotation on rice productivity and soil fertility of irrigated lands of the Krasnodar region. To achieve this goal, the tasks of studying the density of weed seedlings after sprinkler irrigation, the content of water-soluble salts and humus in the soil of rice fields, and the reaction of an intensive variety of rice cultivated after irrigation and drainage techniques in rice fields were completed. Material and methods. Field studies were carried out on the Kuban irrigation system of the Krasnodar territory, which is the most typical in terms of soil conditions for the western climatic zone of the region, with various variants for sprinkler irrigation after major planning of basins. An intensive of Rapan rice variety was used. The methods of the Federal Research Center for Rice, the Kuban State Agrarian University, and Russian standards were applied. Conclusions, the obtained results of the conducted studies prove the effectiveness of sprinkler irrigation in rice crop rotation, increase soil fertility, rice productivity, and contribute to the production of environmentally friendly products without herbicides treatment.
The article presents a study of water consumption of rice crops during periodic watering in various interphase periods of the growing season. The experiments were carried out on a plot of 21.2 hectares in the rice-growing enterprise RBF "Krasnoarmeysky", geographically located on the Kuban rice irrigation system. The object of the study was an intensive variety of Rapan rice of Russian selection. The subject of the study was the water regime during the growing season of rice. It was found that the transition to intermittent irrigation during the growing season of rice "germination-tillering", "tying-flowering" and "ripening" allowed to reduce the irrigation rate by 2122.83, 949.66 and 279.32 m3/ha, or by 11.4, 5.1, 1.5%, respectively, compared to traditional methods of rice irrigation. The results of harvesting rice grains showed that the average yield according to the experiment was 75.7 c/ha, which is more than in the control by 1.2 c/ha. Additional profit from the increase in yield on the experimental variants ranged from 1,440 rubles/ha to 2,880 rubles/ha, net profit - from 480 rubles / ha to 960 rubles/ha.
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