浅瘦型低产田综合改良定位试验研究

The Locational Test and Experiment of the Synthetical Improvement of the Shallow and Infertile Type Paddy Field of Low Output

浅瘦型低产田是我区主要的中低产田类型之一。据定位试验研究表明，采用平衡施肥”、“平衡施肥+有机肥”、“平衡施肥+深耕”或“平衡施肥+深耕+有机肥”等技术改良均有较好的增产效果，比对照平均亩增稻谷对23．9－79．5公斤，增产6．3-24．1％，而且随着改造年度增加，增产幅度也增加，其中以“平衡施肥+深耕+有机肥”处理的综合改良技术效果最显著；不同改良技术对培肥土壤均有一定效果，增施有机肥在改造浅瘦型低产田中，对稳定增产和培肥土壤，提高土壤的自身调节能力和抗逆机制有十分重要的作用。

The shallow and infertile low output paddy field is one type of the medium- low output paddy field in Guangxi. The locational test and experiment showed that the application of the technology of 'balance fertilizer application', 'balance fertilizer application + organic fertilizer', 'balance fertilizer application + deep ploughing' or 'balance fertilizer appication + deep ploughing + organic fertilizer' etc. had bettr effect of output increase. Comparing the contrast, the average increase of rice was 23. 9 - 79. 5kg/mu, i. e. the increased output was 6. 3-21.4%. Moreover,the increased output was being raised up as the increasing of the improving of the year. In all of the mentioned measurements, the best result of the synthetical improving technology was the 'balance feitilizer appliction + deep ploughing + organic fertilizer'. Of course, different improving technology will be effective to fertile the soil. To increase organic fertilizer to the soil will be important in the stable output, the fertility of the soil, the adjustment ability of the soil and the resistant mechanism of the soil.