摘要
通过田间试验查明 :地膜覆盖增强了春玉米光合性能 ,其平均叶面积指数增加 0 .43,总光合势提高 15 % ,净同化率增重 0 .19g/ m2 · d;促进了干物质的累积和生物产量的提高 ,其干物质累积速度平均增长 2 1.9kg/hm2 · d,提高 15 .7% ,最大累积速度出现的时间提前 5 .4d,提高了 32 .6 kg/ hm2 · d;生物产量提高 2 0 .8% ,增强光合作用 。
The results of field experiment proved that:The photosynthetic function of spring maize is improved by film,and the average leaf area coefficient is increased by 0.43,photosynthetic potential is increased by 15 per cent,the assimilative rate is increased by 0.19g/m 2·d.The dry matter accumulation and biological yield of spring maize is improved by film-covered.The average rate of dry matter accumulation is 21.9kg/hm 2·d and it is increased by 15.7 per cent.The rate of dry matter accumulation advances 5.4 days to get to the maximum value and it is increased by 32.6 kg/hm 2·d.The biological yield is increased by 20.8 per cent.Enhancing photosynthesis and improving bilolgical yield is one of the most improtant physiological basis of spring maize covered with film on ton grain field.
出处
《内蒙古农业大学学报（自然科学版）》
CAS
2000年第S1期153-156,共4页
Journal of Inner Mongolia Agricultural University(Natural Science Edition)
关键词
春玉米
覆膜
光合性能
干物质累积
Spring maize
Film covered
Photosynthetic function
Dry matter accumulatio|
