The new corn variety--- Zhengdan 17 Zhengdan 17 is the most advanced maize variety cultivated by the Provincial Academy of Agricultural Sciences after Zhengdan 958. It is now exclusively distributed by Xinan County Seed Company. The variety has seven major characteristics: First, high yield and high yield potential. In the Datian test in Hebei Province in 1999, Zhengdan produced 17 hectares of 750 kilograms per mu, which was 13.5% higher than that of the Hefeng 58. In 2002, it was planted in Xin'an County in summer and the yield per mu reached 681 kilograms. Second, the quality of good According to the Agricultural Products Testing Center of the Ministry of Agriculture test, Zhengdan 17 grain protein content of 9.41%, starch content of 73.14%. Third, strong resistance Zhengdan 17 strong resistance to disease, drought and lodging resistance. Fourth, the reproductive period is moderate Zhengdan 17 early maturing varieties, in Zhengzhou, Luoyang, Kaifeng, Xinxiang and other places sowing in summer, the reproductive period of about 97 days; summer sowing in southern Henan, the fertility period of 95 days. 5. The strong adaptability Zhengdan 17 is suitable for planting in the land of Huanghuaihai Summer Broadcasting Area and above fertility. Because of its strong drought resistance, it can be planted in the semi-arid areas of western Henan and southern Henan. 6. It is advisable to plant 3500-4000 plants per acre for a solid, moderately fertile plot. Its good solidity, no baldness phenomenon. Seven, comprehensive traits Excellent growth at seedling stage, compact plant type, about 250 cm plant height. Ears 18 to 25 cm long, 5 to 5.5 cm thick ear, 1000 to 320-340 grams weight.
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