超甜玉米高产高效栽培模式初探

Preliminary Studies on Cultivation Model of High Yield and High Profit for Super-Sweet Corn

应用农业系统工程原理和最优D饱和设计方法探讨了超甜玉米种植密度、氮磷钾肥配合施用的高产高效栽培模式，并进行了综合分析．结果表明：在广东省中等土壤肥力条件下，要取得每公顷毛收益大于2．25万元以上的收入，种植密度应该为57637株，纯N、K2O分别为209．3、162．7kg，并配合104.7kg的P2O5．而高产栽培在没有株型紧凑又耐密植的超甜玉米新组合提供于大田生产之前，纯N、K2O和P2O5每公顷不应超过337．5和168．8kg，种植密度也不应超过7．5万株.

The cultivation model of high yield and high profit for super-sweet corn in planting density andN-P-K fertilizer combination was conducted by applying agricultual system engineering theory and optimunD satuation design and the results were analysed comprehensively. The results showed that it got 22 500yuan gross profit with 57 637 plants in density,209.3 kg pure N, 162.7 kg K2O and 104.7 kg P2O5 perhectare in the middle fertile soil condition of Guangdong province. Before releasing new variely with com-pact plant type and adaptation to the high plant density, it does not exceed 337.5 kg pure N, 337.5 kgK2O, 168.8 kg P2O5, and 75 000 plant per hectar in density.