Agronomic Characters,Nutrient Absorption and Yield of Different Maize Varieties in Lankao County
In this paper,Five maize varieties(Houqi 321,Fuyu 369,Houqi 501,Jinbei 516,Denghai 605),which were representative in the maize seed market of Lankao County,had a large local cultivation area and were mainly promoted in the region,were selected for field test.Samples were collected at the stages of joint,despatch,filling and maturation.By measuring and analyzing the plant height,stem diameter,dry matter quantity,nitrogen,phosphorus and potassium nutrient content,thousand-grain weight and yield of different corn varieties in different periods,the differences of agronomic traits,nutrient absorption and yield of different corn varieties were studied,so as to screen the excellent corn varieties with high yield suitable for local cultivation.The results showed that the above-ground dry matter of Houqi 321 and Denghai 605 at maturity was higher,which was 16 492.60 kg/ha and 15 911.85 kg/ha,respectively.Houqi 321 had higher above-ground nitrogen accumulation(11.67 kg/ha),and Houqi 321,Jinbei 516 and Denhai 605 had higher above-ground phosphorus accumulation(4.25,3.98,3.78 g/ha),respectively.The varieties with higher above-ground potassium accumulation were Houqi 321(27.94 kg/ha)and Denghai 605(27.67 kg/ha).The highest yield of Houqi 321 was 11 984.20 kg/ha.The yield of Denghai 605 was 11 965.13 kg/ha,Jinbei 516 was 11 129.61 kg/ha,Houqi 501 was 10 900.58 kg/ha,and Fuyu 369 was 9 826.45 kg/ha.By comparing the differences of agronomic traits,nutrient absorption and yield of maize varieties,it was found that,Houqi 321 and Denghai 605 had better yield indexes,and could be promoted as excellent maize varieties with high yield and high utilization rate.Jinbei 516,Houqi 501 and Fuyu 369 were relatively worse.
万方数据
维普
