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一、选用高产的优良品种品种增产潜力是实现夏玉米高产的前提。针对夏玉米生育时间受局限的特点,高产创建田选用的杂交品种应具备五个特性:一是株型紧凑、耐密性好。每亩能容纳4800—5500株的密度,边行优势不明显;二是抗倒性好;三是综合抗病性好;四是后期叶片保绿好,光合物质生产效率高;五是生育期适中,一般95—105天为宜。目前我省推广的杂
First, the selection of high yield varieties of good yield potential is to achieve high yield of summer maize premise. For the limited time of summer maize breeding characteristics, high-yield field selection to create cross-hybrid varieties should have five characteristics: First, plant compact, good density. Per acre can accommodate the density of 4800-5500 strains, edge line is not obvious; Second, lodging resistance is good; Third, the comprehensive disease resistance is good; Fourth, the latter part of the green leaf is good, photosynthetic material production efficiency is high; Moderate, generally 95-105 days is appropriate. At present, promotion of miscellaneous in our province