叶面喷施锌肥对谷子籽粒产量及锌含量的影响  

Effects of Foliar Spraying Zinc Fertilizer on Grain Yield and Zinc Content of Millet

作　　者：董扬[1] DONG Yang(Qiqihar Branch,Heilongjiang Academy of Agricultural Sciences,Qiqihar 161006,China)

机构地区：[1]黑龙江省农业科学院齐齐哈尔分院,黑龙江齐齐哈尔161006

出　　处：《黑龙江农业科学》2023年第6期29-33,共5页Heilongjiang Agricultural Sciences

基　　金：齐齐哈尔市科学技术局创新激励项目(CNYGG-2022041,CNYGG-2022031);国家现代农业产业技术体系(CARS-06-14.5-B21)。

摘　　要：为了促进富锌谷子生产,以黑龙江省主栽谷子品种嫩选17为试验材料,采用裂区设计,设置5个外源锌剂量(0,2,3,4和5 kg·hm^(-2)),在拔节期、抽穗期、灌浆期进行叶面喷锌处理,研究不同生育期不同供锌水平对嫩选17产量因子及籽粒锌含量的影响。结果表明,产量指标对外源锌的响应有所不同,外源锌对穗长正效应随着喷施时期推移效果逐渐变小,而对单穗重、千粒重、产量、含锌量的正效应随着喷施时期推移,效果逐渐显现;剂量效应表现明显,中低剂量(T1~T3)下对谷子产量指标及籽粒锌含量有促进作用,高剂量(T4)下则表现为抑制作用;抽穗期和灌浆期施用外源锌能够显著提高谷子籽粒锌含量,喷施时期对籽粒锌含量的影响表现为灌浆期>抽穗期>拔节期。利用模糊隶属函数分析计算出在灌浆期施用4 kg·hm^(-2)的硫酸锌对提高嫩选17产量因子及含锌量效果最好,5 kg·hm^(-2)施用剂量下效果次之。In order to promote the production of zinc rich millet,Nenxuan 17,the main millet variety in Heilongjiang Province,was used as the experimental material,and five zinc doses(0,2,3,4 and 5 kg·ha^(-1))were set up in the split zone design.The leaf zinc spraying treatments were carried out at jointing stage,heading stage and filling stage.To study the effects of different zinc supply levels at different growth stages on yield factors and grain zinc content in Nenxuan 17.The results showed that the yield index had different responses to exogenous zinc.The positive effect of exogenous zinc on panicle length gradually decreased with the application period,while the positive effect on panicle weight,1000-grain weight,yield and zinc content gradually appeared with the application period.The dose effect was obvious.The medium and low dose(T1~T3)could promote the grain yield index and grain zinc content,while the high dose(T4)could inhibit the grain zinc content.Application of exogenous zinc at heading stage and filling stage could significantly increase the zinc content of grain.The influence of spraying stage on the zinc content of grain was as follows:filling stage>heading stage>jointing stage.The fuzzy membership function analysis was used to calculate that the application of 4 kg·ha^(-1) zinc sulfate at the filling stage had the best effect on increasing the yield factor and zinc content of Nenxuan 17,followed by the application dose of 5 kg·ha^(-1).

关 键 词：谷子 锌含量 产量 硫酸锌 

分 类 号：S515[农业科学—作物学]