| Effects of fertilizer application operation on physiology and yield of maize in Karts Mountainous Areas |
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| DOI：10.7606/j.issn.1000-7601.2007.06.11 |
| Key Words: fertilizer application Karts mountainous areas maize physiological basis yield |
| Author Name | Affiliation | | LU Yin-gang | Agricultural College Guizhou University,Guiyang,Guizhou 550025,China | | YUAN Hong-wei | Agricultural College Guizhou University,Guiyang,Guizhou 550025,China | | LIU Jun-xia | Agricultural College Guizhou University,Guiyang,Guizhou 550025,China | | CUI Bao-wei | Agricultural College Guizhou University,Guiyang,Guizhou 550025,China |
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| Abstract: |
| Taking PZH—15 as the material,based on the prerequisites of N、P、K with identical matching,designing different fertilizer consumption,the feritilizer operation of maize in Karts area has studied and analyzed the impact on physiological characteristic and output of every fertilizer treatment.The result shows: in 0～360 kg/hm2 fertilizer can improve the plant height,dry matter accumulation of maize,nitrogen accumulation,root vigor,leaf nitrate reeducates activity,chlorophyll content and yield,meanwhile the leaves' nitrate reeducates activity,dry matter accumulation and the final output of wheat,root activity and other indicators were significantly correlated;Cultivating under the same conditions and dropping the fertilizer amount from 360 kg/hm2 to 315 kg/hm2,the dry matter accumulation will be increased,the roots vigor and leaf nitrate reeducates activity will be strengthened,but the yield are not obviously different in the same treatment.In this experimental condition,applying 236 kg/hm2 potassium fertilizer,158 kg/hm2 phosphorus,315 kg/hm2 nitrogen and deeply applying top-dress in the ear period is the optimized handling in the total nutrient supply and coordinating distribution periods. |
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