【摘要】 试验提出玉米局部精作穴播的新型栽培技术,并对该技术条件下的产量效应进行了研究。结果表明:与常规的宽窄行模式相比,局部精作穴播土壤扰动减少89%,实现了土壤的局部精作和轮休;同等密度条件下,高地力水平条件(常规模式下经济产量大于11005kg/hm2)更有利于产量潜力的挖掘,通过增加穗粒数和穗重实现增产,试验中春玉米(登海601)经济产量可提高18.7%。同时指出,叶面积指数是该技术条件下增产的关键环节。更多还原

【Abstract】 The newplanting technique of "aperture semination with part exact cultivation" was first mentioned in this experiment and we had studied on the yield effect in the technique. The results showed that the cultivation area compared with "Wind/NarrowRow" was reduced by 89%, and the soil was fallowby turns. Under the conditions of the same density, high earth fertility conditions (the economic yield more than 11 005 kg/ha under the conventional pattern) was more conductive to excavate the production potential by increasing ear No. per one centiare and grain weight. The economy yield of spring maize (DH601) was increased by18.7% in the experiment. At the same time, we had known that it was the key for increasing the plant photosynthesis capability and yield by increasing the mean leaf area index(MLAI).更多还原