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Farmer's appropriation of system of rice intensification practices in water-scarce irrigation schemes in Northern Tanzania
Paddy and Water Environment ( IF 1.9 ) Pub Date : 2021-02-08 , DOI: 10.1007/s10333-020-00836-1
Rosemary Evarist Kavishe , Frederick Cassian Kahimba , Hans Charles Komakech

The system of rice intensification (SRI), advocates new ways of rice cultivation which challenges farmers’ knowledge and skills to the extent that they are required to learn, experiment and integrate new principles to suit their specific needs and agro-ecological conditions. This study was conducted to evaluate farmers’ appropriation to SRI; first, a survey was conducted to explore farmers’ adjustments of SRI. Second, yield and water productivity of the integrated system were assessed by setting up an experiment in the farmers’ plots. Whereby four treatments representing farmers’ adaptations of SRI practises were assessed: continuous flooding (F1) with two 21 days old seedlings at 15 × 15 cm spacing. The other three were under intermittent irrigation with two 21 days seedlings at 20 × 20 cm (F2), one 21 days seedling at 20 × 20 (F3) and one 15 days seedling at 25 × 25 cm spacing. Yields obtained were 4.8, 8.5, 8.2 and 9.2 tons/ha for F1, F2, F3 and F4, respectively. Water productivity (WP) of 0.15, 0.39, 0.35 and 0.51 kg/m3 was obtained for F1, F2, F3 and F4, respectively. Water saving under SRI practise was 34.3%, 28.9% and 45.1% for F2, F3 and F4, respectively. Two seedlings 21 days old at 20 × 20 cm with intermittent irrigation are recommended for this area as it ensures a sufficient number of plants, relatively higher yields and a reduced considerable amount of irrigation water. The findings show that the integration of SRI into the local rice farming system has the potential to improve yields and water productivity of irrigation schemes.



中文翻译:

坦桑尼亚北部缺水灌溉计划中农民对稻米集约耕作制度的拨款

稻米集约化(SRI)系统提倡新的稻米种植方式,在要求农民学习,试验和整合新原理以适应其特定需求和农业生态条件的情况下,挑战农民的知识和技能。本研究旨在评估农民对SRI的拨款;首先,进行了一项调查,以探讨农民对SRI的调整。其次,通过在农户土地上进行实验来评估综合系统的产量和水生产率。因此,评估了代表农民适应SRI做法的四种处理方法:用两根21天大的幼苗以15×15 cm的间距进行连续淹水(F1)。其他三个在20×20 cm(F2)处间歇灌溉,有两个21天的幼苗,以20×20(F3)进行1天21天的幼苗,以25×25 cm的间隔1天15天的幼苗。F1,F2,F3和F4的产量分别为4.8、8.5、8.2和9.2吨/公顷。水分生产率(WP)为0.15、0.39、0.35和0.51 kg / m3是为F1,F2,F3和F4分别获得。在SRI实践中,F2,F3和F4分别节水34.3%,28.9%和45.1%。建议在此区域以20×20 cm的间隔21天大的两棵幼苗,间歇灌溉,因为这样可以确保有足够数量的植物,相对较高的产量,并减少大量灌溉水。研究结果表明,将SRI纳入当地水稻种植系统具有提高灌溉计划的产量和水生产率的潜力。

更新日期:2021-02-08
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