基于温室育秧的水稻光温生产潜力指数修正——以黑龙江省富锦市为例

Revise of Light and Temperature Productive Potential Index of Rice Based on Greenhouse Seedling——A Case Study in Fujin County

作物光温生产潜力指数的准确性直接影响着农用地质量分等成果的真实性。使用逐级订正模型先后从播种日期、插秧日期、育秧期间水稻所处气温、气候数据4个方面对富锦市水稻光温生产潜力指数进行修正,并对修正结果进行分析,以期为后续的农用地分等工作提供参考依据。研究结果表明:原插秧日期并不符合水稻生长的客观规律,接下来的农用地分等工作应该对水稻的播种日期、插秧日期进行修正更新;温室育秧技术通过提前水稻播种日期、插秧日期并增加育秧期间水稻所需积温,从而提高水稻光温生产潜力指数;温室育秧技术和气候变化均使水稻光温生产潜力指数增加,但温室育秧技术对富锦市水稻光温生产潜力指数影响程度较大。

The accuracy of light and temperature productive potential index of rice has direct impact on the reality and scientific classification of agricultural land. Using step by step revised model in this paper we revised the productive potential index from sowing date, transplanting date, temperature and climate data, and also compared the changes and reasons, which could provide a scientific basis for the subsequent work for agricultural land classification. The results showed that the original seedling and transplanting dates did not fit the rice growing regulation. The following agricultural land classification work should be revised according to rice sowing date and transplanting date. The light and temperature potential productive index was increased by advancing the sowing and transplanting dates. Climate change and greenhouse seedlings of rice both make light and temperature productive potential index increased, however the greenhouse seedlings has a bigger impact on light and temperature productive potential index in Fujin.