不同种植时期对甜高粱主要生物性状及成糖的影响

以“沈农甜杂2号”甜高粱为试验品种,在上海地区进行种植,考察了不同种植期对甜高粱主要生物性状及成糖的影响。结果表明:6月初种植的甜高粱的几个主要生长阶段的生长时间和全生长期比5月初种植的甜高粱短;5月初种植的甜高粱的茎秆和叶的总的生物学产量比6月初种植的高出27.82%;推迟甜高粱的种植时间30d左右,可以延长甜高粱茎秆中糖分的保持时间10～14d,并有利于提高甜高粱茎秆汁液中总糖的积累水平。

Influence of the Different Seeding Thnes on Main Biologic Character and Sugar Forming of Sweet Sorghum

The sweet sorghum variety-SN Tianza No.2 was planted in Shanghai area in order to investigate the influence of the different seeding times on main biologic characters and sugar forming of sweet sorghum. The results demonstrated that the several main growing periods and the total growing period of sweet sorghum cultivated at beginning of June were shorter than that of sweet sorghum cultivated at beginning of May. The total stalk and leaf yield of the sweet sorghum seeded at the beginning of June was 27.82 % higher than that of sweet sorghum seeded at the beginning of May. Meanwhile,when the seeding time was delayed for about 30 days,the sugar retaining time was prolonged about 10～30 days,which was beneficial to the sugar accumulation in the stalk of sweet sorghum.