一季中晚稻-再生稻高产栽培技术研究  

Study on high-yielding cultivation techniques in the ratoon rice of single-middle-late season rice

作　　者：刘怀珍[1] 黄庆[1] 陆秀明[1] 李康活[1] 李惠芬[1] 张彬[1] 

机构地区：[1]广东省农科院水稻研究所,广东广州510640

出　　处：《广东农业科学》2012年第20期1-3,共3页Guangdong Agricultural Sciences

基　　金：国家科技支撑计划项目(2007BAD89B14);国家公益性行业(农业)科研专项(00803028;201103001);农业部农业结构调整重大技术研究专项(06-03-07B);广东省财政厅项目(粤财预[2005]11号;粤财教[2006]187号);广东省科技厅农业攻关项目(2005B20101001)

摘　　要：于2008年5～10月以黄华占为试材,在博罗县麻陂镇乾兴农场进行了一季中晚稻-再生稻的不同施氮水平(再生稻每667m2促芽肥设纯N 0、5、7、和9 kg)与留桩高度(离地面20、30、40 cm)试验研究,结果表明:不同施氮水平的再生稻促芽肥对头季稻(一季中晚稻)和再生稻的穗粒结构和产量没有明显影响;留桩高度对再生稻的产量具有极显著影响,留桩高度40 cm具有极显著的增产效果,增产原因是其较高节位(第3、4节)的穗数和有效穗数较多、结实率较高、千粒重较大。To explore high-yielding cultivation techniques for Huanghuazhan,different combinations between total amount of nitrogen application for bud development（0,5,7 and 9 kg per 667m2） and stubble heights（20,30 and 40 cm aboveground） were conducted during May to October 2008 in Qianxing Farm of Mapi Town,Boluo County,Guangdong Province.The results showed that there was no significant difference between yields in ratoon rice under four degrees of amount of nitrogen application,and there was significant difference between yields of ratoon rice under different stubble heights,the yield of ratoon rice increased with stubble height and reached the most in 40 cm.stubble height increased the panicle and effective panicle numbers、seed setting rate and 1 000-grain weight.

关 键 词：一季中晚稻 再生稻 高产 栽培 

分 类 号：S511.048[农业科学—作物学]