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从肥力因子、肥力评价、肥力培育以及水旱轮换等方面归述了1978—1984年间水稻土肥力研究的主要进展。从微生物学角度探讨了水田中有机物的投入、分解及动态;研究了化肥、有机肥、残茬以及土壤水分状况对原料氮固定和土壤氮矿化的影响,观察了水稻地上部及地下部的固氮活性以及固氮生物的固氮量及氮利用率;从耕层表土及心土追踪了水田土壤肥力变化。探讨了肥力指标;分析了堆肥、蒿杆、砻糠、畜粪尿及改土材料的改土效果;肯定了客土、内排水设施、改进施肥对培肥和增收的作用;分析了水改旱带来的问题及其相应措施。
The major advances of paddy soil fertility research in 1978-1984 were summarized from the aspects of fertility factor, fertility evaluation, fertility cultivation and rotation of water and soil. From the perspective of microbiology, the inputs, decompositions and dynamics of organic compounds in paddy fields were discussed. The effects of chemical fertilizers, organic fertilizers, stubble and soil moisture on nitrogen fixation and soil nitrogen mineralization were studied. Nitrogen fixation activity and nitrogen fixation of nitrogen-fixing organisms and nitrogen utilization rate. The changes of soil fertility in paddy fields were tracked from topsoil and core soil of topsoil. The indexes of fertility were discussed. The effects of soil compaction, Artemisia sphaerocephala, bran, livestock excrement and soil improvement materials were analyzed. The effects of soil fertilization and income increase by soil and drainage facilities were confirmed. Problems Caused by Drought and Corresponding Measures.