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本文根据江苏省南北五个试验点的专题试验资料进行的分析。江苏水稻产量主要受地理位置和播期的影响,单季水稻产量淮北高于苏南,适期早播高于迟播,这是气候条件影响的结果。通过试验资料的统计分析,水稻叶片数(N)与播种至该叶片出现时期的活动积温(∑T)为对数关系 N=a+bLn(∑T);水稻干物质增重与同期积温的关系可用沮滞方程曲线:W=K/(1+Je~(-a∑T))日照不足明显影响干物质的增长,主要是光照减弱,净同化率明显降低。
Based on the experimental data of five pilot stations in north and south of Jiangsu Province, this paper analyzes. The yield of rice in Jiangsu is mainly affected by the geographical location and sowing date. The output of single-season rice in Huaibei is higher than that in southern Jiangsu, and the suitable early sowing is higher than the late sowing, which is the result of climatic conditions. According to the statistical analysis of experimental data, the number of rice leaves (N) was logarithmically related to the accumulated activity temperature (ΣT) during sowing till the emergence of the leaves. N = a + bLn (ΣT); The dry matter weight gain Relationship Available Frost Equation Curve: W = K / (1 + Je ~ (-aΣT)) Insufficient sunlight significantly affected the growth of dry matter, mainly decreased light, net assimilation rate was significantly reduced.