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选用先玉335为超高产玉米品种,通过科学的田间管理,创造出了15 310 kg/hm2的吨粮田。吨粮田品种具备以下高产因素:棒三叶叶面积与单株叶面积的比值高;具有良好的穗部性状整齐度;生育后期干物质积累量高于其他品种;具有较高的经济系数。
The selection of the first jade 335 as a super high yielding maize variety has resulted in a tonnage of 15 310 kg / hm2 of grain through scientific field management. The grain yield per ton of grain possessed the following high yield factors: the ratio of leaf area to leaf area per plant was high; the uniformity of ear traits was good; the accumulation of dry matter in late growth stage was higher than other varieties; and the economic coefficient was high.