南方红壤丘陵区玉米生产模式研究

A STUDY ON MAIZE PRODUCTION MODEL IN RED EARTH HILLY AREAS OF SOUTHERN CHINA

在南方红壤丘陵区传统种植业模式的基础上，通过水旱轮作、旱地间作等方式，发展玉米生产，建立“粮食经济作物饲料”三元复合结构模式，不但有利于提高农业资源的综合利用效率，而且还能促进畜牧业、增加农民收入；同时将新模式和传统的较好模式轮换种植，还有利于土壤养分的平衡，提高持续生产能力。

Red earth hills are extensively distributed in the tropical and subtropical zones of China, which occupy 227% of the total land area. Models for traditional farming practices are double cropping of rice, winter green manure or rapes or winter fallow. Maize has been planted since historical times in the region, but its development was very slow, particularly following the double cropping of rice, maize was pushed out. However, the inadequacy of fodders has restricted the development of animal husbandry. Conditions for planting maize in the region are advantageous. According to traditional plant models, maize can be planted on gentle slopes, dry farmland and part of irrigated fields where water, fertilizer and labor force are defict. In these areas, rotation of paddy and dryland farming, and intercropping of dryland farming can be practised to develop maize production. The establishment of a triple complex structure model of cerealseconomic cropsfodder can not only facilitate rational utilization efficiency of agricultural resources but also promote livestock development and increase farmers' income. If rotational farming can be practised by means of new models in alternating with more suitable traditional models, soil nutrient balance can be maintained and sustainable production capability can be improved.