关键词: 杂交小麦, 杂交小麦, 化学杀雄剂, 施药剂量, SC2011, 结实率

Abstract: Cultivated land is more important resources for all crops. In order to draw the planting plan and utilize cultivated land properly, a case was determined to Yizheng City in Jiangsu Province. Considering climate, soils, landform, environment of Yizheng City, 13 indexes were sieved and determined for rice suitability evaluation for cultivated land of Yizheng City, and hierarchical analysis model and membership function model were built based on Yizheng Cultivated Land Resources Management Information System. The results indicated that, according as accumulative curve and clustering analytical method, these cultivated land areas were plotted out 4 zone, including the best suitable zone, suitable zone, little suitable zone and not suitable zone. Cultivated land areas in the best suitable zone counted 10.20% for the whole areas. Cultivated land areas in the suitable zone and little suitable zone counted 56.08%, 25.50% for the whole areas, respectively. Cultivated land areas in the not suitable zone counted 8.22% for the whole areas. To validate the veracity for rice suitability evaluation, the actual yield of rice were investigated in the Yizheng City, and the rice yield of 319 croplands was recorded. There was a positive relationship between actual rice yield form investigation and suitability index obtained in the evaluation (R2=0.1964, 319 samples). The trend of results between actual yield of rice and rice suitability evaluation were consilient, and the suitability index could reflect rice yield of cultivated land.