木薯间作套种西瓜高产高效栽培及经济效益分析

为促进木薯产业的发展,提高木薯种植比较经济效益,2012—2015 年在广西桂平开展了木薯间作套种西瓜高产高效栽培试验及示范。总结了一套成熟的木薯间作套种西瓜栽培技术,分析了2014—2015 年木薯间作套种西瓜的产量与经济效益,分析表明,示范基地采用木薯间作套种西瓜栽培模式大约比纯种木薯增收110.1%,比纯种西瓜增收90.8%;辐射区间作套种大约比纯种木薯增收129.0%,比纯种西瓜增收77.5%。研究结果为木薯间作套种规范化栽培和生产提供技术支撑。     

高蛋白春大豆套种木薯适宜播期的研究

为探讨在闽西北气候条件下,木薯套种大豆的最适播期,研究播期对大豆和木薯产量、农艺性状和经济效益的影响。结果表明：大豆套种木薯条件下,大豆3 月17 日播种,大豆和木薯的产量最高,分别为1432.5 kg/hm2和20511.0 kg/hm2,纯收入最高,达2350.50 元/hm2。因此,大豆3 月中旬播种,大豆和木薯的产量越高,农艺性状越好,产值越高。     

Effect of cassava mosaic disease,soil fertility,plant spacing and their interactions on cassava yields in Zanzibar

Improvement of farmers' decision-making has been recognised as critical for the implementation of IPM, yet practitioners lack sound knowledge on the 'how and why' of farmers' decision-making processes. This study explored the perceptions, pest management practice, decision tools and sources of information of smallholder farmers growing cotton in India and vegetables in Kenya. Farmers trained under an Insecticide Resistance Management and two IPM Farmer Field School projects were compared with untrained farmers from the same localities, using individual interviews and participatory group analysis methods. Trained farmers' decision-making was enhanced, by the use of more decision tools and new sources of information and technologies and they were generally more confident in their pest management strategies than untrained farmers. As a result, trained farmers reduced their pest management costs but did not always obtain higher gross margins. Issues of gender, sustainability, economics and group action are discussed, along with recommendations for research and extension to take a closer look at farmers' decision-making processes in cash and subsistence crops.