通过大田种植试验对崇蔗12-11、 崇蔗12-17以及崇蔗12-1463个甘蔗新品种出苗率、 分蘖率、 茎径、有效茎数及含糖量等指标进行测定.结果表明:崇蔗12-17不适宜在崇左蔗区种植,崇蔗12-11和崇蔗12-146在崇左蔗区综合表现良好,适宜在崇左蔗区推广种植.

介绍甜玉米无公害栽培技术,包括品种选择、选地整地、隔离种植、适时播种,合理密植、田间管理、病虫害防治及适时采收,以促进农民增产、增收、增效的同时保障消费者健康.

试验研究3个不同施氮量对11个玉米品种产量的影响.结果表明:桂单0810、兆丰588、桂先365属于高产型品种,在生产中可优先考虑.桂单0810、亚航671耐氮肥,获得高产的最佳施氮量为纯氮345 kg/hm2;桂先365、桂单1125耐氮肥,获得高产的最佳施氮量有待进一步研究;桂单901、亚航0919、兆丰588对氮肥敏感不耐氮肥,施纯氮138 kg/hm2最有利于产量的提高;桂单162、亚航670耐肥,稳产性能好;华优168、万川1306不耐氮肥.

M aize variety ofG uidan 162 w as used as experim entm aterials.A tw o-factor splitplotexperim ent,density as m ain processing, row spacing as deputy processing,w as conducted to explore the effectof four planting densities and four row spacings on m aize yield and yield com ponents .The results show ed thatpercentof bearing kernelw as notsignificantly influenced by density,row spacing, interaction betw een density and row spacing;Length ofbearing kernelw as very significantly influenced by density,interaction betw een density and row spacing,itw as increased w ith the increase ofdensity;Eardiam eterw as significantly influenced by density,itw as decreased w ith the increase ofdensity;M aize yield w as very significantly influenced by density,row spacing, interaction betw een density and row spacing,under four row spacing conditions the highestyield w as 4000 plants/667m 2,under four densities conditions the highestyield w as 60 cm row spacing, density and row spacing w ere 4 500 plants/667m 2 and 60 cm respectively planting m odel,the yield ofG uidan 162 w asthe highest.

<正>随着种业市场的进一步开放,市场竞争也越来越激烈,品种选育也逐渐成为各种子企业和科研院所的首要工作。杂交水稻的生育特性决定了其品种选育是一个漫长而又复杂的过程,在选育过程中如果没有注重或者忽略了一些重要的技术要点和环节,选育结果往往与我们的选育初衷背道而驰,因此水稻品种选育技术要点的掌握就显得尤为重要,特别是新近毕业和

为提供玉米新品种,保证广西玉米生产可持续发展,进行玉米新组合鉴定试验,以筛选出玉米新组合.试验表明:20个参试品种中,18个组合表现为增产,正大619(CK)在20个组合中产量排名第19位,有S127表现为减产;其中KJ1242、GD1201、KJ1226产量排名前三名,增产幅度在45％以上,说明在水肥条件较好的地区种植丰产性好;S127、6222、212B-30后期叶片保绿性好,耐熟性强;金卡6号抗病性差.