配施黄腐酸钾对甘蔗生长和产量的影响

[目的]了解配施黄腐酸钾对甘蔗生产的提质增效作用,筛选适宜蔗区的黄腐酸钾田间用量。[方法]分别在耿马县、双江县和景谷县等3个云南蔗区主产县进行柳城05-136的大田试验。以当地习惯施肥为对照,比较了4种黄腐酸钾配施用量对柳城05-136生长、产量及糖分的影响。[结果]配施黄腐酸钾能有效提高甘蔗株高、有效茎和产量,对提高甘蔗糖分有一定的促进作用。双江县试验点采用当地习惯施肥配施600 kg·hm^(-2)黄腐酸钾处理(CF_(1))较当地习惯施肥增产29.72%;耿马县和景谷县试验点采用87.5%当地习惯施肥配施600 kg·hm^(-2)黄腐酸钾处理(CF_(3))较当地习惯施肥分别增产15.66%和24.61%。[结论]配施黄腐酸钾对甘蔗产量有明显的促进作用,3个试验点均以配施600 kg·hm^(-2)黄腐酸钾效果最佳。建议在云南蔗区进行黄腐酸钾配施。

Transport of atmospheric trace elements and dust－soil to the Western Pacific Ocean

Atmospheric aerosol and rainwater samples collected in the different Western Pacific area were analyzed by instrumental neutron activation and proton induced X-ray emission to (1) determine the atmospheric concentrations of trace elements over the Western Pacific and (2) to esti mate the atmospheric deposition of trace elements and dust-soil material to this region. High abundance of pollutant and crustal elements relative to oceanic sources was observed. Some characteristics of marine atmosphere relating to long-range transport of crustal and anthropogenic elements from continent to the remote ocean are discussed. The total dust-soil particle mass is estimated to be 0. 066-1.2 μg/m￣3 over the Western Pacific Ocean areas. Atmospheric inputs of dust-soil particles control the marine particle concentrations of crustal elements. In addition, the characteristics of marine rain water are discussed.

互助擦亮乡村振兴底色

青峰秀水拥抱着这片钟灵毓秀的土地;千年文脉滋养着这方日新月异的沃野。排排新楼拔地而起,集镇村落焕发新颜,条条公路四通八达,美丽乡村宜居宜业,展现出一派新景新貌新气象。这里就是被誉为“彩虹故乡”的互助土族自治县。互助县辖19个乡镇,总面积3424平方公里,总人口40.16万。近年来,互助县聚焦“田园美、村庄美、生活美”的建设目标,紧密结合脱贫攻坚、乡村振兴、农村人居环境整治等重点工作,抓点示范、以点带面、整体推进高原美丽乡村建设,建成了一批特色鲜明、生态宜居、业兴人和的美丽乡村,一幅幅乡村美丽宜居、群众富裕兴旺的旖旎画卷正在这片土地上徐徐展开。