甜玉米浙凤甜2号春季播期试验

以浙凤甜2号甜玉米为试材,以华珍和超甜3号为对照品种,研究了春季露地不同播种时间对其生育特性、鲜穗产量、植株性状及穗部性状的影响,明确其春季适宜的播种期和收获期。结果表明:4月5日前提前播种对收获期提前影响不大;4月15日~5月5日播种的,收获期相应推迟。各品种平均产量随播期延迟呈先上升后下降趋势。4月5日以前播种有遇到冷空气及持续阴雨天而造成烂种的风险,在4月5日左右视天气情况适时早播有利于提高产量。

Experiment of Sowing Date of Sweet Corn Zhefengtian No.2 in Spring

The effects of different date in open field in spring on the growth characteristics,fresh ear yield,plant characters and ear characters of sweet corn Zhefengtian No.2 were studied to clear the proper sowing date and the harvest date.The results showed that the harvest date could not be advanced by sowing before April 5,which was delayed by sowing from April 15 to May 5.The yield of all varieties increased at first and then decreased with the delaying of sowing date.Sowing before April 5,the seed may be rotten due to cold air and continuous rainy days.The yield could be increased by sowing in time based on weather condition.