Dry Matter Accumulation and High-yield Fertilizer Technology of Whole-film-mulching-and-double-furrow-sowing Maize in Semi-arid Area

Field trials were conducted to study dry matter accumulation and high-yield fertilizer technology in maize.The results showed that variations of dry matter accumulation in the whole-plant,grain,leaf,and stem with ear during the maize growth periods showed S-shaped curve.Dry matter accumulation of corn whole-plant increased with the course of growth period;the highest yield,9028.2 kg/hm2,was obtained under the conditions of N 225 kg/hm2,P2O5 120 kg/hm2,and K2O 90 kg/hm2 application(OPT treatment),significantly higher than other treatments,which showed that balanced fertilization can significantly increase corn grain yield in the whole film mulching and double-furrow sowing techniques,different degree of corn yield loss was detected in no fertilization and deficiency fertilization of nitrogen,phosphorous and potassium.