叶面喷施微量元素水溶肥对甘蓝型油菜宝油150农艺性状的影响

Effect of Foliar Spraying Trace Element Water-soluble Fertilizer on Agronomic Trait of Baoyou 150,a Brassica napus Variety

【目的】探明油菜蕾薹期和初花期叶面喷施不同浓度禾谷动力大田专用微量元素水溶肥对甘蓝型油菜产量和农艺性状的影响,为油菜高产栽培提供理论和技术支撑。【方法】以甘蓝型油菜宝油150为供试材料,采用随机区组排列,以喷施清水为对照,研究在蕾薹期和初花期叶面喷施清水(CK)、2 g/L、4 g/L、6 g/L、8 g/L、10 g/L 6个浓度禾谷动力大田专用微量元素水溶肥对甘蓝型油菜产量和农艺性状的影响。【结果】叶面喷施禾谷动力大田专用微量元素水溶肥可显著提高油菜一次分枝部位和主花序角果密度,可显著降低油菜植株株高和主花序长度,可有效降低油菜生物产量;对油菜主花序有效角果数和一次有效分枝数无明显影响;对油菜单株总角果数、单株经济产量和千粒重的影响均未达显著水平。【结论】综合油菜产量构成三要素,甘蓝型油菜宝油150在蕾薹期和初花期叶面喷施4 g/L为最佳喷施浓度。

【Objective】The effects of foliar spraying special field trace element water-soluble fertilizer with different concentrations at bolting and early flowering stage on yield and agronomic trait are discussed,which provides the theoretical and technical support for high-yield cultivation of rapeseed.【Method】The effects of spraying trace element water-soluble fertilizer with 2 g/L,4 g/L,6 g/L,8 g/L and 10 g/L at bolting and early flowering stage on yield and economic trait of Baoyou 150,a Brassica napus variety,are studied by using a randomized block design and taking spraying clean water as CK.【Result】The foliar spraying trace element water-soluble fertilizer can improve the first branch position and pod density of main inflorescence significantly,reduce plant height and main inflorescence length of Baoyou 150 significantly and effectively reduce biological yield.The foliar spraying trace element water-soluble fertilizer has no significant effects on effective pod number of main inflorescence and number of the first effective branch.The foliar spraying trace element water-soluble fertilizer has a certain effects on pod number per plant,economic yield per plant and 1000-seed weight of Baoyou 150 but the influence is not at the significant level.【Conclusion】The optimal amount of foliar spraying special field trace element water-soluble fertilizer for Baoyou 150 is 4 g/L at bolting and early flowering stage according to three factors affecting yield composition of rapeseed.