为探究0.02％二氢卟吩铁可溶粉剂在小麦上不同使用方式及用量的效果,以'淮麦139'为试验材料,采用每公顷施药量为22.5、45、67.5、90 g 0.02％二氢卟吩铁可溶粉剂,以清水为对照(CK),通过拌种以及分别在拔节期、始穗期叶面喷施的方式,研究0.02％二氢卟吩铁可溶粉剂对小麦的最适用量范围和最适使用技术.结果表明:相较于各自CK,45g/hm2和67.5g/hm2使用量下无论是拌种还是叶面喷施,均能提高小麦产量,其中,拌种方式下67.5 g/hm2获得最高产量,增产8.4％,有效穗数、穗粒数和容重增加6.89％、7.8％、1.8％;在拔节期和始穗期叶面喷施,均以施药量为67.5 g/hm2的处理获得最高产量,增产11.8％、14.04％,始穗期喷施方式下千粒重显著增加10.15％.这说明45 g/hm2和67.5 g/hm2 0.02％二氢卟吩铁可溶粉剂通过增加小麦植株生物量、叶绿素含量增强叶片光合能力和籽粒灌浆能力,增强过氧化氢酶(CAT)、超氧化物歧化酶(SOD)、过氧化物酶(POD)活性提高小麦抗逆能力,为产量形成提供物质条件.因此,不同使用方式配合相应0.02％二氢卟吩铁可溶粉剂用量均可以有效提高小麦产量,且以施药量67.5 g/hm2的增产幅度最大,综合考虑各项指标,叶面喷施效果优于拌种.
Effects of Different Application Methods and Amounts of Iron Dihydroporphyrin Soluble Powder on Wheat Growth
To investigate the effect of 0.02％iron dihydroporphyrin soluble powder on wheat in different ways and dosages,'Huaimai 139'was used as the test material,0.02％iron dihydroporphyrin soluble powder was applied at 22.5,45,67.5 and 90 g per hectare,and clear water was used as the control(CK).The optimum dosage range and application technique of 0.02％iron dihydroporphyrin soluble powder for wheat were investigated by seed dressing and foliar spraying at the nodulation stage and the beginning of ears,respectively.The results showed that compared with the CK,both seed dressing and foliar spraying at 45 g/hm2 and 67.5 g/hm2 could improve wheat yield,among which the highest yield was obtained at 67.5 g/hm2 with 8.4％increase in seed dressing,and 6.89％,7.8％and 1.8％increase in effective spike number,spike grain number and grain weight;foliar spraying at both the nodulation stage and the beginning of ears,the highest yields were obtained at the treatment of 67.5 g/hm2,with 11.8％and 14.04％increase in yield and 10.15％increase in thousand grain weight at the beginning of the spike.This indicated that 45 g/hm2 and 67.5 g/hm2 0.02％iron dihydroporphine soluble powder enhanced leaf photosynthetic capacity and grain filling capacity by increasing wheat plant biomass and chlorophyll content,and enhanced catalase(CAT),superoxide dismutase(SOD)and peroxidase(POD)activities to improve wheat stress tolerance and provide material conditions for yield formation.Therefore,different application methods with corresponding 0.02％iron dihydroporphyrin soluble powder dosage can effectively improve wheat yield,and the application rate of 67.5 g/hm2 had the largest yield increase.Considering all indicators,the effect of foliar spraying is better than seed dressing.
万方数据
维普
