配施生物有机肥与无机肥对连作菠萝土壤的影响

针对连作4年的海南乐东黎族自治区尖峰镇的菠萝地块，将生防菌（枯草芽孢杆菌HL2）、载体（菜籽饼、泥炭土、椰糠）和普通有机肥（OF）利用二次发酵技术制成生物有机肥（BOF1、BOF2、BOF3），以单施化肥为对照（CK），通过田间试验，研究不同生物有机肥与无机肥配施对菠萝连作土壤养分、产量和经济效益的影响。结果表明，在菠萝整个生育期，与CK相比，普通有机肥（OF）处理和生物有机肥（BOF1、BOF2、BOF3）处理均能提高连作菠萝土壤pH、有机质、速效磷含量、菠萝产量和经济效益，分别提高26.99%～67.41%、13.65%～150.32%、4.96%～70.9%、31.21%～66.83%、25.31%～55.88%；与CK相比，施用生物有机肥BOF1能提高连作菠萝土壤的速效钾含量，为9.04%～37.38%。施用OF和生物有机肥与无机肥配施均能改善土壤养分状况、提高菠萝产量、增加经济效益，特别是生物有机肥BOF1效果更优。通过产量数据与土壤养分指标评价指数进行回归分析，结果表明，菠萝产量与土壤养分具有一定的相关性。

Effects of Organic,Bio-organic and Inorganic Fertilizers on Soil Nutrients and Yield of Pineapple Plantation under Continuous Cropping

Pineapples in the plantation under long-term continuous cropping were applied with organic or biological organic fertilizers (OF, BOF1, BOF2, BOF3) prepared from bacteria (Bacillus subtilis HL2) as a biocontrol agent, carriers (rapeseed cake, peat soil, coconut bran) and common organic fertilizer by secondary fermentation technology, and chemical fertilizer as control (CK) to analyze the effects of the organic, bio-organic and inorganic fertilizers on soil nutrients, yield and economic benefits of the pineapple plantation under continuous cropping. In the whole growth period of pineapple, the treatments with organic and bio-organic fertilizers increased the soil pH, the soil contents of organic matter and available phosphorus, and yield and economic benefit of pineapples in the pineapple plantation under continuous cropping by 26.99%～67.41%, 13.65%～150.32%, 4.96%～70.9% and 31.21%～66.83%, 25.31%～55.88%, respectively as compared with CK. The BOF1 treatment increased the content of soil available potassium in the pineapple plantation under continuous cropping by 9.04% to 37.38%. Organic fertilizer (OF), bio-organic fertilizers (BOF1, BOF2, BOF3) and inorganic fertilizer all improved soil nutrient content, and increased pineapple yield and economic benefits, especially the bio-organic fertilizer BOF1 which was much better than other fertilizers. Regression analysis of yield data and evaluation indexes of soil physical and chemical indicators showed that pineapple yield has a certain correlation with soil nutrients.