不同播种量对白三叶草生长和越夏率的影响  

Effect of Sowing Quantity on Growth and Summer Survival Rate of White Clover

作　　者：徐小林[1] 黄庆海[1] 李大明[1] 余喜初[1] 胡志华[1] 周利军[1] 柳开楼[1] 叶会财[1] 胡惠文[1] 

机构地区：[1]江西省红壤研究所农业部鄱阳湖区红壤耕地质量与环境重点野外科学观测试验站,江西进贤331717

出　　处：《中国农学通报》2015年第36期109-112,共4页Chinese Agricultural Science Bulletin

基　　金：公益性行业(农业)科研专项"绿肥作物生产与利用技术集成研究及示范"(201103005);星火计划项目"肥田萝卜新品种‘赣肥萝1号’示范与推广"(20151BBF61075);江西省科技支撑计划"丘陵红壤幼龄橘园绿肥多重配置技术研究与示范"(20132BBF60077)

摘　　要：为探讨不同播种量对白三叶草(Trifolium repens L.)生长、产量、越夏率以及对杂草生物量控制的影响,于2012年10月—2013年11月在幼龄杨梅园开展白三叶草不同播种量研究。结果表明:随播种量增加,白三叶草出苗数、草层高度呈上升趋势,而茎粗、叶片SPAD值和单株鲜重均呈下降趋势。白三叶草鲜草产量随播种量的增加显著增加,播种量<15.00 kg/hm^2时,增加幅度较大,处理间达显著差异,而播种量为15.00~18.75 kg/hm^2时,鲜草产量增幅减小;白三叶草种子产量和越夏率均随播种量增加而呈先升后降的趋势,播种量为11.25 kg/hm^2种子产量最高,播种量为15.00 kg/hm^2时越夏率最高。杂草生物量则随白三叶草播种量的增加呈下降趋势。因此,白三叶草在丘陵红壤区幼龄果园适宜播种量为11.25~15.00 kg/hm^2。A field experiment was conducted to study the effect of sowing quantity on the growth, yield andsummer survival rate of white clover（Trifolium repens L.） and its inhibition effect on the biomass of weed. Theexperiment was conducted from October 2012 to December 2013 in a young waxberry orchard. The resultsshowed that the emergence number and height of white clover increased with the increase of sowing quantity,while the stem diameter, leaf SPAD value and fresh weight decreased. The grass yield of white clover increasedsignificantly with the increase of sowing quantity, when the sowing quantity was less than 15.00 kg/hm^2, theincrease range was relatively high and the difference among treatments was significant, however when thesowing quantity was between 15.00 to 18.75 kg/hm^2, the increase range was relatively low. The seed yield andsummer survival rate increased first and then decreased, the seed yield reached the top when the sowingquantity was 11.25 kg/hm^2, and the summer survival rate reached the highest value with the sowing quantity of15.00 kg/hm^2. The biomass of weed decreased with the increase of the sowing quantity. Therefore, the mostsuitable sowing quantity was 11.25 to 15.00 kg/hm^2 in the young orchard in hilly red soil region.

关 键 词：白三叶草 杨梅园 适宜播种量 产量 越夏率 

分 类 号：S142.1[农业科学—肥料学]