武汉市畜禽养殖沼液土地消纳后氮、磷流失污染影响分析及对策——以茶果林地为例

通过对2个典型畜禽养殖场(1号、2号养殖场对应处理T1、T2)沼液土地(以茶果林地为主)消纳后地表径流的监测与分析,研究了沼液土地消纳后氮、磷流失污染影响。结果表明,相比未施肥土地,粪肥消纳后土地的地表径流中总氮、总磷浓度和污染输出负荷成倍增加,总氮为2.4~9.9倍,总磷为1.4~2.8倍;沼液经土地消纳后,会增加土地地表径流中氮、磷的流失量,其中T1、T2总氮流失率分别为43.7%、37.4%,总磷流失率分别为38.9%、24.5%。归纳了沼液土地消纳过程中影响氮、磷流失的因素,提出了畜禽粪肥土地消纳利用的对策建议。

赣榆丘陵地区茶果林复合经营模式及其经济和生态效益浅析

通过对赣榆丘陵地区茶果林间作模式与常规单一模式所产生经济和生态效益进行试验比较分析,总结并挑选出适合该区发展的茶果林复合经营模式,为该区复合林业的发展提供参考依据。

A Preliminary Investigation of Low Yield Reason of Camellia oleifera in Dehong Prefecture

[Objective] The paper was to preliminarily investigate the low yield reason of Camellia oleifera caused by fruit and flower dropping in Dehong prefecture. [Method]Pollen viability of C. oleifera was determined using I-KI and TTC （2,3,5-triphenyl tetrazolium chloride） method, the germination rate of pollen was determined by in vitro culture method, the pollen tube growth was observed by the fluorescent microscope through aniline blue dyeing, and the effects of different pollination methods on fruit setting rate of C. oleifera was analyzed. [Results] The pollen viability and the quantity of pollen tube of C. oleifera with good fruiting were significantly higher than the plants with poor fruiting, but their pollen germination rate had no significant differences; cross pollination was conducive to fruiting setting of C. oleifera. [Conclusion] The growth and development condition of C. oleifera pollen had important effect on the yield of C. oleifera in Dehong prefecture.

抓“三改”促“四化”着力做好“农”文章

几年来,永春县按照“县里抓龙头、乡镇抓基地、村里抓特色、农户抓种养、部门抓服务”这一农业产业化发展思路,念好“农”字经,大力抓好农业“三改”工作。首先是改造中低产田及茶果林园。该县共投入1720多万元,改造中低产田3100亩、中低产茶果林园1.5万亩,实施闽台合作永春芦柑生产技术综合改进示范片5万亩。其次是改变种植结构。在抓好水稻种植的基础上,投入资金1.1亿元兴建柿子、毛竹、龙眼、麻竹等高山型5个万亩果竹带,引进种植青花梨。