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Perennial live paddy planting rice on the basis of conventional fertilization, by basal + can, tillering, closed herbicide + company + can, can (20% less nitrogen) basal + partner, 100% of nitrogen in the whole stages base + can with different processing, performance from the growth of rice, rice tillering, leaf chlorophyll value, yield and increasing costs, unit yield inceement, VCR, etc, with increasing can improve rice leaf chlorophyll content, promote rice tillers, makes the rice growth, significantly increase rice yield and output value, according to labor saving, has demonstrated and value. 相似文献
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秦巴山区退耕还林生态效益外显与经济效益内隐状况调查 总被引:6,自引:2,他引:4
退耕还林工程的实施效果关系到政策效应的评价问题。秦巴山区退耕还林面积2.54×106 hm2,约占全国退耕还林总面积10%。对该区3省7县10个乡镇抽样问卷和现场访谈调查的资料分析表明,秦巴山区退耕还林工程实效中存在着生态效益外显与经济效益内隐的状况。其主要原因在于缺乏科学规划和科技指导。这就出现了"政府关注的生态目标基本达到与退耕户期望的生活来源持久性替代经济目标尚未完全实现"的问题(外出务工无法永久性解决养老问题)。通过科技指导、技术示范、退耕还林后续产业扶持,有望实现退耕还林生态效益与经济效益双赢的目标。 相似文献
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