保水措施对旱坡地甘蔗产量与品质的影响

Effects of Water Saving Measures on Yield and Quality of Sugarcane in Dry Sloping Land

用甘蔗品种湖光1号,进行地膜覆盖、施用保水剂、覆盖地膜+保水剂和常规栽培(CK)4种保水措施的旱坡地甘蔗栽培试验,探究不同保水措施对土壤水分、温度及甘蔗生长、品质、产量的影响效应,为旱坡地甘蔗抗旱栽培提供科学依据。结果表明:地膜覆盖、施用保水剂、盖膜+施加保水剂处理均能提高土壤温度和含水量,地膜盖膜保墒效应显著,保水剂的保墒作用在降水量少时显著;与CK相比,3种保水措施处理均能显著提高甘蔗分蘖率、株高、茎径、单茎重、蔗茎产量与蔗糖产量;盖膜处理显著增加蔗茎产量,但制糖品质降低;施用保水剂的蔗茎产量显著高于CK,但显著低于盖膜处理,制糖品质显著提高;盖膜+施加保水剂处理蔗茎产量与制糖品质都显著提高,效益最好,值得推广。

In order to study the effect of different water saving measures on soil moisture, soil temperature and the growth, quality and yield of sugarcane, the sugarcane cultivation experiment was carried out on dry sloping land with HG-1, under treatments covered with mulch film, with the application of water retaining agent, covered mulch film and applying water retaining agent, and with conventional cultivation（ CK）. Results showed that the temperature and moisture content of the soil increased under 3 water-retention treatments compared with CK. The moisture content significantly increased under the treatment covered with mulch film, so was the application of water retaining agent in dry season. The tillering rate, plant height, stem diameter, stalk weight and yield of sugarcane significantly increased under 3 water-retention treatments compared with CK. The stalk weight of sugarcane significantly increased, but the sugarcane quality decreased under the treatment covered with mulch film. The stalk weight of the application of water retaining agent was significantly more than CK, significantly less than the treatment covered with mulch film, but sugarcane quality significantly increased. The stalk weight and quality of sugarcane significantly increased under the treatment covered mulch film and applying water retaining agent. The economic benefits was the best, and it should be widely applied.