Responses of Growth and Yield of Fresh-Eating Maize"Caitiannuo 100"to Autumn Sowing Date under Facility Cultivation
A field trial was carried out along the Yangtze river of Anhui province to investigate the effects of autumn sowing date on the growth duration,yield and economic benefits of fresh-eating maize.The fresh-eating maize cultivar"Caitiannuo 100"was used.The treatments were comprised of four sowing dates:August 14th,August 25th,September 4th and September 14th.The findings demonstrated that fresh-eating maize could be harvested in the winter out-of-season between August 14th and August 25th when the daily average temperature droped to 10 ℃,adopting the warming measures for the facility greenhouse.However,if the sowing date was moved later than September 4th,the low temperature would prevent the fresh-eating maize from going through its normal life cycle.The growth periods before and after silking of fresh-eating maize sown on August 25th were prolonged eight and 17 days,compared to the sowing date of August 14th.The fresh ears could be harvested on December 23rd.The August 25th sowing date treatment decreased the plant height by 13.61％,shortened the ear length by 10.03％,and increased the bald tip by 29.43％,which resulted in a decrease of kernel number per ear by 17.86％and yield by 13.68％,while the benefit increased by 35.52％to 71 910.00 yuan/ha compared with the sowing date on August 14th.In conclusion,fresh-eating maize can be sown along the Yangtze River basin form August 14th to 25th by using greenhouse facilities and the fresh ears can be listed in the off-season with relatively high benefits.However,fresh-eating maize should not be sown after September 4th.
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