针对河北省高产夏玉米倒伏问题,选用不同抗倒性品种XY335、XD20和JD28,设置旋耕直播、免耕直播、旋耕直播+培土和免耕直播+培土4个处理,并分析了不同耕作措施下玉米茎秆形态特征、机械强度和产量变化。结果表明,旋耕处理能明显降低株高、穗位、重心和基部节间长粗比,显著增强茎秆抗拉力和基部节间机械强度,倒伏率最低,但穗粒数较少,粒质量与产量较低;免耕直播处理JD28、XY335和XD20的倒伏率分别为0,11.2%,10.6%,抗倒伏能力仅次于旋耕,穗粒数、粒质量及产量最高;拔节期培土明显增加株高、穗位、重心和基部节间长粗比,降低茎秆抗拉力和基部节间机械强度,其中,免耕直播+培土下XY335和XD20的倒伏率分别为89.6%和82.2%。
Recent studies have shown that stem lodging has reduced maize yields in Hebei Province,mainly un- der high- yielding conditions.In this paper,the effects of tillages management with No Tillage,No Tillage + Ridging, Rotary Tillage and Rotary Tillage + Ridging were studied on morphological characteristics,mechanical characteristics of stem and yield characters using three logging resistance maize varieties,Xianyu 335 (Low resistance) ,Xundan 20 (Low resistance) and Jingdan 28 (High resistance).The results showed that Rotary Tillage had lower plant height, ear height and high center of gravity,smaller ratio of internode length /diameter of the 4th and 5th under ear,better stretching resistance of stem and internodes mechanical strength of the 4th and 5th under ear.Therefore, Rotary Till- age had the lowest loging rate.Ridging atatelongation stage was opposite on morphological characteristics and nical characteristics of stem,and the loging rate of Xianyu 335 and Xundan 20 were 89.6% and 82.2%.It is found that the loging rate of Jingdan 28,Xianyu 335 and Xundan 20 were 0, 11. 2% and 10.6% under No Tillage,the lodging resistance were second to Rotary Tillage.However, the 100- grain weight,kernels per spike and yield were higher than Rotary Tillage.
[1] Tollenaar M,Lee E A. Yield potential,yield stability and stress tolerance in maize[J]. Field Crops Res,2002,88: 161-169.
[2] 勾玲,黄建军,赵明,等. 群体密度对玉米茎秆抗 倒力学和农艺性状的影响[J]. 作物学报,2007,33 (10): 1688-1695.
[3] Norberg O S,Mason S C,Lowry S R. Ethephon influence on harvestable yield,grain quality,and lodging of corn [J]. Agron J,1988,80: 768-772.
[4] 孙世贤,戴俊英,顾慰连,等. 氮 磷 钾对玉米倒伏及 其产量的影响[J]. 中国农业科学,1989,22(3): 28-33.
[5] Stam P P. Seeding traits of maize as indicators of root lodging[J]. Agronomie,1992,12(2): 157-162.
[6] 勾玲,赵明,黄建军,等. 玉米茎秆弯曲性能与抗 倒能力的研究[J]. 作物学报,2008,34(4): 653-661.
[7] 孙世贤,戴俊英,顾慰连. 密度对于倒伏及产量的影响 [J]. 沈阳农业大学学报,1989,20(4): 413-416.
[8] 许迪. 夏玉米耕作方式对耕层土壤特性时间变异性 的影响[J]. 水土保持学报,2000,14(1): 64-70.
[9] 魏凤珍,李金才,王成雨,等. 氮肥运筹模式对小麦茎秆 抗倒性能的影响[J] . 作物学报,2008,34 (6): 1080-1085.
[10] 张忠旭,陈温福,杨振宇,等. 抗倒伏能力与茎秆物理 性状的关系及其对产量的影响[J]. 沈阳农业大学学 报,1999,30(2): 81-85.
[11] 马均,马文波,田彦华,等. 重穗型水稻植株抗倒伏 能力的研究[J]. 作物学报,2004,30(2): 143-148.
[12] 丰光,景希强,黄长玲,等. 夏玉米抗倒性与茎秆穿 刺力和拉力关系的初步研究[J]. 玉米科学,2010,18 (6): 19-23.
[13] 程富丽,杜雄,刘梦星,等. 玉米倒伏及其对产量的 影响[J]. 玉米科学,2011,19(1): 105-108.影响 玉米科学
[14] Anderson B,White D G. Evaluation of methods for iden-tification of corn genotype with stalk rot and lodging re-sistance[J]. Plant Dis,1994,78: 590-593.
[15] 孙贵臣,任元,马晓磊,等. 不同种植密度对青贮玉 米生物产量及主要农艺性状的影响[J]. 山西农业科 学,2013,41(2): 146-148.
[16] 丰光,景希强,李妍妍,等. 玉米茎秆性状与倒伏性 的相关和通径分析[J]. 华北农学报,2010,25 (增 刊): 72-74.
[17] 刘仲发,勾玲,赵明,等. 遮荫对玉米茎秆形态特 征 穿刺强度及抗倒伏能力的影响[J]. 华北农学报,2011,26(4): 91-96.
[18] 刘魏魏,赵会杰,李红旗,等. 密度 种植方式对夏玉 米茎秆抗倒伏能力的影响[J]. 河南农业科学,2011,40(8): 75-78.
[19] 冯延江. 免耕覆盖对玉米生长发育及产量的影响 [J]. 黑龙江农业科学,2008(3): 32-33.
[20] 张海林,陈 阜,秦耀东,等. 覆盖免耕夏玉米耗水特 性的研究[J]. 农业工程学报,2002,18(2): 36-39.
[21] 邱红波,向腾兵,龙友华,等. 免耕栽培对玉米根系性 状及其产量的影响[J]. 贵州农业科学,2011,39(9): 55-57.
[22] 宋日,吴春胜,岳杨. 培土对玉米节根特征的影 响[J]. 东北师范大学学报: 自然科学版,2008,40 (4): 132-135.