甘蔗套种马铃薯多种密度栽培技术研究

为研究甘蔗套种马铃薯的最佳播种密度,提高土地复合产值,实现种植效益最大化。通过连续2 a开展新植蔗和宿根蔗套种马铃薯多种密度栽培试验,研究不同种植条件下甘蔗和马铃薯的产量、品质及经济效益。结果表明,新植蔗田中马铃薯的最佳套种密度为4.5万粒/hm2,宿根蔗田中马铃薯的最佳套种密度为3.9万粒/hm2。其中,新植蔗田马铃薯产量达35 275 kg/hm2,甘蔗产量增19.9%,糖锤度提高1.2个百分点,土地复合产值增99.7%,新增纯收入126.3%;宿根蔗田马铃薯产量达24 115 kg/hm2,甘蔗产量增19.2%,糖锤度提高1.3个百分点,土地复合产值增89.9%,新增纯收入110.5%。

Study on Planting Density Cultivation Techniques of Sugarcane Intercropping with Potato

The best planting density of sugarcane interplanting potato, improve the land composite value, realize the maximum benefit of planting. Through continuous 2 years to carry out the new plant cane and ratoon sugarcane interplanting potato variety of planting density test, on the condition of different planting sugarcane and potato yield, quality and economic benefits. The results show that the new planting sugarcane in potato optimum planting density for 4.5 million grains/hm2, potato in ratoon sugarcane optimum planting density is 3.9 million grains/hm2. Among them, the new planting potato yield in sugarcane field of 35275 kg/hm2, sugarcane yield increased by 19.9% and brix increased 1.2 percent, land composite value increasing 99.7%, increased net income increased by 126.3%; ratoon sugarcane potato yield reached 24115 kg/hm2, sugarcane yield increase of 19.2%, Brix increased 1.3 percent, land composite value increase 89.9%, increased net income increased 110.5%.