粮食作物生产系统定量调控理论与技术模式

赵明,周宝元,马玮,李从锋,丁在松,孙雪芳

Theoretical and technical models of quantitative regulation in food crop production system

Ming ZHAO,Bao-Yuan ZHOU,Wei MA,Cong-Feng LI,Zai-Song DING,Xue-Fang SUN

表2 不同区域不同田块土壤理化特征

Table 2 Soil physical and chemical characteristics of different plots at different districts

土壤特征 Soil characteristics 东北春玉米区 Spring maize in Northeast China 黄淮海小麦-玉米区 Wheat/maize in the Huang-Huai-Hai Plain 长江中下游稻作区 Rice in Yangtze Plain 一般农田 Farmers’ field 高产高效 Optimized field 一般农田 Farmers’ field 高产高效 Optimized field 一般农田 Farmers’ field 高产高效 Optimized field 物理特征Physical characteristics 耕层深 Depth of topsoil (cm) 15.1 26.5 17.2 27.3 14.5 25.0 容重 Soil volume weight (g cm-3) 1.43 1.21 1.37 1.16 1.54 1.28 耕层有效土量 Effective amount of tilling soil (×106 kg hm-2) 1.97 3.15 2.21 3.07 2.01 3.18 化学特征Chemical characteristics 有机质 Organic matter (%) 1.81-4.61 2.63-6.67 0.78-1.26 1.12-1.68 0.95-2.45 2.01-3.81 全氮 Total nitrogen (%) 0.08-0.32 0.21-0.52 0.03-0.09 0.08-0.15 0.06-0.13 0.12-0.17 速效磷 Available phosphorus (mg kg-1) 4-10 8-15 2.8-7.8 6.7-13.2 2.8-6.7 5.5-8.5 速效钾 Available potassium (mg kg-1) 92-136 116-251 91-136 141-215 53-102 76-142