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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。
The experiment put forward a new cultivation technique of local sowing and planting of corn, and studied the yield effect under the technical conditions. The results showed that compared with the conventional wide and narrow row modes, the soil disturbance of local precision cropping decreased by 89%, and the local fine workmanship and rotation of the soil were realized. Under the same density conditions, the high level of soil fertility (economic yield greater than 11005kg / hm2 in conventional mode) More conducive to the production potential of mining, by increasing the number of grains per spike and increase production, the experiment spring corn (Denghai 601) economic output can be increased by 18.7%. Also pointed out that the leaf area index is the key to yield increase under this technical condition.