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通过2年的定位试验,研究不同袋控施肥对耕型壤质水稻土区甘蔗产量及其土壤养分的影响。结果表明:CB2处理(2孔袋控复混肥B)蔗茎年均产量和蔗糖的年均产量最高,比BC处理(蔗农习惯施肥方式)分别增产24.04%、21.39%。相比撒施,袋控施肥能增加蔗茎产量和蔗糖产量。经过2年试验:根据全国第二次土壤普查养分分级标准,各处理土壤全氮、全磷、碱解氮和速效钾含量都处于中等水平(四级或三级);全钾和有效磷含量处于高等水平(二级及其以上),处理间养分等级差异不大。各处理土壤有机质含量较试验前都有不同程度的增加,土壤p H均下降。因此,在新植和宿根两季甘蔗种植过程中2孔袋控复混肥B一次性施入可代替蔗农常规施肥方式,且满足新植、宿根两季甘蔗养分的需求,达到既增产又节约施肥次数的目的。
Through two years of location experiment, the effects of different bag-control fertilization on sugarcane yield and its soil nutrient under cultivated paddy-paddy soil were studied. The results showed that the annual average yield of cane and the annual average yield of sucrose of CB2 treatment (2-hole bag control compound fertilizer B) were the highest, 24.04% and 21.39% higher than that of BC treatment. Compared with spreading, bag control fertilization can increase cane yield and sucrose production. After 2 years of experiment, according to the national second soil census nutrient classification standard, the content of total nitrogen, total phosphorus, available nitrogen and available potassium were all in the middle level (four or three levels); the content of total potassium and available phosphorus At a high level (two and above), there was no significant difference in nutrient levels between treatments. Soil organic matter content of all treatments had different degrees of increase before the experiment, soil p H decreased. Therefore, in the new plantation and perennial sugarcane planting two-hole bag control compound fertilizer B can be used instead of conventional sugar cane farming methods, and to meet the new planting, perennial sugar cane nutrient needs, both to increase production and save The purpose of fertilization times.