论文部分内容阅读
为了消减冷浸型中低产田长期浸渍、泥温低、土壤有效养分低等障碍因子,通过田间小区试验和动态取样与室内测定,研究了不同有机无机肥配比对冷浸田土壤肥力及水稻生长的影响。结果表明:与复合肥处理比较,复合肥与40%(N)生鸡粪配施处理的土壤磷酸铁盐和磷酸钙盐含量分别提高11%和17%,复合肥与60%(N)生鸡粪配施处理的土壤磷酸铝盐含量提高44%,且磷酸铝盐、磷酸铁盐和磷酸钙盐占无机磷总量的比例提高,闭蓄态磷占无机磷总量的比例降低,促使土壤中难溶性磷向易溶性磷转化,提高土壤有效磷含量;复合肥配施60%(N)生鸡粪处理的土壤松结态腐殖质占重组腐殖质的比例提高1.9个百分点,紧结态腐殖质占重组腐殖质的比例降低4.6个百分点,土壤活性有机质含量提高14%,土壤阳离子交换量提高11%;复合肥与40%(N)生鸡粪配施处理的土壤真菌和放线菌数量分别提高33%和28%,复合肥配施60%(N)生鸡粪处理的土壤细菌数和微生物活性分别提高160%和19%,水稻磷、钾吸收量分别提高5%和111%;复合肥与40%(N)生鸡粪配施处理的早、晚稻产量分别增加8%和42%,复合肥与60%(N)生鸡粪配施处理的早、晚稻产量分别增加6%和31%。有机无机平衡施肥是适合于冷浸田水稻增产的施肥方式。
In order to reduce long-term immersion, low mud temperature and low effective soil nutrients in cold-immersed mid-low yield field, the effects of different combinations of organic and inorganic fertilizers on soil fertility and rice The impact of growth. The results showed that compared with the compound fertilizer treatment, the contents of iron phosphate and calcium phosphate in soil increased by 11% and 17%, respectively, when combined with 40% (N) The content of phosphate aluminum in soils increased by 44%, and the ratio of phosphate aluminum phosphate, calcium phosphate phosphate and inorganic phosphate increased, while the proportion of closed phosphorous to total inorganic phosphorus decreased, Soil insoluble phosphorus to soluble phosphorus conversion, increase soil available phosphorus content; fertilizer with 60% (N) raw chicken manure treatment of soil loosely coupled humus accounted for the proportion of recombinant humus increased by 1.9 percentage points, tight junction humus The percentage of reorganized humus was decreased by 4.6 percentage points, the content of active soil organic matter was increased by 14% and the cation exchange capacity of soil was increased by 11%. The quantity of soil fungi and actinomycetes by compound manure and 40% (N) 33% and 28%, respectively, and the bacterial and microbial activities in soil increased by 160% and 19%, respectively, and phosphorus and potassium uptake by rice plants increased by 5% and 111%, respectively. Compound fertilizer The yield of early and late rice increased by 8% and 42% respectively when treated with 40% (N) raw chicken manure, while that of compound fertilizer and 60% The yield of early and late rice increased by 6% and 31% respectively with (N) raw chicken manure. Organic-inorganic balanced fertilization is suitable for paddy field cold paddy fertilization.