Nitrogen, Magnesium, Boron Effect On Sweet Corn Yield And Quality

This field experiment was to study the effect of the application of N, Mg and B on the yield and qua I ity of sweet corn. The field exper iment used "311桝" optimum regression design. The main results were as follows:1. In the case of this experiment, the suitable application of N, Mg and B promoted the growth of sweet corn, and increased its yield and improved its qua I ity.2. The effects on fresh ear yield, soluble sugar, starch and protein content in sweet corn grain from the proportion of Nitrogen, Magnesium, Boron was very significantly.3. The single and bilateral effects on fresh ear yield, soluble sugar, starch and protein content in sweet corn grain from the proportion of Nitrogen, Magnesium, Boron was very complicat.4. By the calculation of computer, the best fertilization combination for maximum fresh ear yield of sweet corn was 18.00 kg N/667 m, 2.50 kg Mg/667 m and 0.75 kg B/667 m2, and theoretic yield was 641.53 kg/667m2. The best fertilization plan for maximum soluble sugar content of sweet corn was 3.00 kg N/667 m, 3.50 kg Mg/667 m2 and 1.00 kg B/667 m2, and theoretic soluble sugar content was 16. 24%. The best fertilization plan for maximum starch content of sweet corn was 11. 75 kg N/667 m, 1.25 kg Mg/667 m and 1.00 kg B/667 m, and theoretic starch content was 27.05%. The best ferti Iization plan for maximum protein content of sweet corn was 20.50 kg N/667 m2, 2.00 kg Mg/667 m2 and 1.00 kg B/667 m2, and theoretic protein content was 14.86%.5. The synthesis optimum fertilization combination was: 13.3125 kg N/667 m2, 2. 3125 kg Mg/667 m2 and 0. 9375 kg B/667 m2. The fresh ear yield was 614. 70 kg/667m2. The soluble sugar, starch and protein content was 15.18%, 26.75% and 14.31% respect ively.