湘南红壤区牧草生产的气候模型

利用湖南省祁阳县的长期气象数据，结合不同牧草的生长特性，建立了一个反映当地牧草生长状况的气候模拟模型，并据此气候模型评价了当地气候条件对牧草生产的影响，鉴定了牧草周年生长的限制性因子。根据气候模型预测出温带牧草的最佳播种时期在１０月中旬至１１月下旬，热带牧草最好在３月下旬至４月中旬播种。牧草生长气候模型还可用于指导牧草品种筛选及牧草生产管理。

CLIMATIC MODEL FOR FORAGE PRODUCTION IN RED-SOIL REGION OF SOUTHERN HUNAN

A model was established on the basis of the long-term climatic data and the specific requirements of forage species in the red-soil region of southern Hunan province. With the model, the effects of local climatic factors on forage growth were assessed, and, thereby, the most constraining factor was determined for each particular time in the year. It was indicated by the model that the optimal sowing time was from the middle of October to the end of November for temperate forages, and from the end of March to the middle of April for tropical species. The model was also employed to guide germplasm selection and management of forage production.