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陕西省蓝田县是粮食种植大县,玉米是该县的第二大粮食作物,年种植玉米面积38万亩,推广应用耐旱耐密型玉米,对提高全县玉米产量意义重大。试验对几个耐密性品种在中高密度进行试验分析得出如下结论:蓝田县夏玉米种植密度在4 500株/亩的产量较高,继续增加密度增产作用不明显,种植先玉335和榆单9号产量较高,可在全县推广种植。
Lantian County, Shaanxi Province, is a large county for grain production. Maize is the second largest grain crop in the county. The area of maize to be planted in the year is 38 million mu. Popularization and application of drought-tolerant and close-packed corn are of great significance to improving the yield of maize in the county. Tests on several density varieties tested in medium and high density concluded that: Lantian County summer corn planting density of 4 500 plants / mu higher yield, continue to increase the density of the yield increase is not obvious, planting Xian Yu 335 and elm Single No. 9 higher yield, can promote the planting in the county.