有机—无机配方肥对新植宿根糖料蔗提产增糖及沃土效果初报

为探讨甘蔗有机—无机配方肥对甘蔗产量、糖分及蔗地土壤养分的影响,于2010—2012年开展甘蔗施用有机—无机配方肥与等量氮磷钾化肥的小区定位对比试验研究(1年新植2年宿根)。结果表明:在中等肥力丘陵旱地每年每667m2施商品有机肥500kg、有机—无机配方肥(15—6—9,有机质20%)200kg和氯化钾10kg的处理,获得较佳的综合性状:平均蔗茎产量7419kg,蔗茎含糖分16.61%,三年后耕层土壤有机质增0.11g/kg、全氮增0.045g/kg、有效磷增2.74mg/kg、速效钾增2.3mg/kg、酸性土壤pH值增0.09。表明"有机肥+有机—无机配方肥"对甘蔗生产兼有营养作物和培肥地力的效果。

The study of organic and chemical compound fertilizers impact on new-planted perennial root sugarcane for its higher sugar content and fertile soil effect

In order to explore the impact of sugarcane organic and chemical compound fertilizer on the yield,sugar content and soil nutrient,a compound fertilizer experiment and an equal N-P-K fertilizer experiment were conducted and compared in 2010—2012（one year new-planted and two years perennial root cultivation）.The results show that in hilly dry-land with middle fertile soil,the application treatment of 500kg manure,200kg organic and chemical compound fertilizer and 10kg potassium chloride in 667 ㎡ yearly can obtain a better integrated effect with average yield of 7419kg,sugar contents of 16.61%.after three years,the soil organic matter of plough layer will be increased by 0.11g / kg,total N by 0.045g / kg,effective P by 2.74mg / kg,quick-acting K by 2.3mg / kg,acid soil Ph value by 0.09.The research results show that ＂ manure ＋ organic and chemical compound fertilizer＂ has the functions and effects of nourishing crop and fostering soil fertility in sugarcane production.