相同肥料用量紫云英与化肥配施对水稻生长及产量的影响

摘要

[ Objective ] In the double-crop rice area of south Anhui Province, we try to discuss the effect on the rice growth and yield in the combined application of fertilizer and Astragalus sinicus at an equal quantity. [ Method ] In the experiment of early rice, the physiological indexes and economic characteristics of rice in different phases were measured and the relationship of different fertilization deals was analyzed. [ Result ] The rice tillering quality in the combined application of fertilizer and Astragalus sinicus was relatively high, although rice tillering and maturity period was delayed, it had no significant influence to the agriculture production. The manurial effect of Astragalus sinicus was slow. According to the development status, economic traits and yield of each treatment, 60％ fertilizer + 40％ Astragalus sinicus was appropriate proportion. [ Conclusion ] Astragalus sinicus can supply part of nitrogen to the rice growth instead of fertilizer. In an appropriate proportion and quantity of combined Astragalus sinicus application, the infection to the first season' s rice yield will be no significant. As a green manure, the effect of Astragalus sinicua on the follow-up crops and soil's improvement should have the future investigation.%[目的]探讨在安徽省沿江及皖南稻区的双季水稻种植模式下,相同肥料用量紫云英与化肥配施对水稻生长发育及产量的影响.[方法]进行早稻施肥效应试验,分析水稻生长发育各期间生理指标、经济性状与不同施肥处理的关系.[结果]化肥-紫云英配施的水稻分蘖质量较高、有效穗较多;虽使水稻分蘖期和成熟期推迟,但对农业生产无显著影响;紫云英的肥效相对化肥较慢,第1季对产量的促进并不明显,但在第2季的增产明显.综合各个处理生长发育状况、经济性状和产量,60%化肥+40%紫云英配施是比较合适的化肥-紫云英配施比例.[结论]紫云英在一定程度上可以取代化肥,提供水稻生长发育需要的氮素,并且在比例、用量合理的情况下,第1季总体产量不受显著影响.作为绿肥,紫云英对后续作物及土壤的改善效应有待进一步研究.