甜菜在海南冬种试验研究

The tests of sugarbeet culture in winter in hainan

连续４ 年在海南岛进行的甜菜冬季栽培试验结果证明，甜菜在具有热带气候的海南冬种是成功的，不仅长势好，病虫害也不严重。参试的３ 个甜菜品种根产量差异不显著，其中“丰抗３０９”品种块根产量４７．２５ｔ／ｈｍ２ ，含糖率１５．５２ 度。从９ 月３０ 日～１１ 月２０ 日６ 个播期处理的根产量差异显著，播期早、生育期长的产量高。试验认为，甜菜在海南冬种的最佳播期是９ 月３０ 日～１０ 月１０ 日，最佳收获期是３ 月２０ 日前后。因上茬作物晚收而不能及时播种时，采取育苗移栽。

The tests of sugarbeet culture in winter in Hainan Island have been carried out four years. The results indicated that the beet grow very well with a few of pests under the tropical climate. No more difference within the yield of three varieties,among them,the root yield of CV. Fengkang 309 is 47.25t/ha, sugar content 15.52%, there were significant difference which in the root yield in 6 sowing dates from 30.Sept. to 20. Nov.. The early sowing with a long growth period can increase the yield of beet. The optimum sowing time is between 30. Sept. to 10.Oct.and harvesting is on 20. Mar. when the sowing time delayed due to the late harvest of former crops, seedling in the bed can be used and no any influence to the yield.