摘要
为探索玉米覆盖秸秆的增产效应及施用技术，１９９２～１９９４年，我们在全区范围内开展了试验研究。平均覆盖秸秆比露地新增亩产４６．６ｋｇ，增产１４．４％，新增投产比１：４．５。但增产的大小受覆盖秸秆种类、数量和时期的影响。玉米覆盖秸秆的主要作用是平稳土壤温度，保蓄土壤水分，培肥地力，对发展山区旱地持续农业具有十分重要的意义。
In order to probe the applying technique and its effect of increasing yield by mulching with stalks on dry-land for maize,the experiment was carried out in Bijie prefecture during 1992-1994.The results showed thatthe maize yield to be mulched with stalks increased 46.6 kg per mu,or by 14.4%as compared with that ofbare land,and its ratio of input and output was 1:4.5, but the production would be influenced by the kinds,quantity and time of stalks mulching.The main effects of stalk mulching were to balance the soil temperatue,to teserve the soil moisture and to improve the soil fertility.So,it had an important significance to developdryland agriculture in mountainous areas.
出处
《贵州农业科学》
CAS
1996年第5期15-20,共6页
Guizhou Agricultural Sciences
关键词
旱地玉米
覆盖秸秆
增产效应
maize of dryland
stalks mulching
effect of increasing production
