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以江西省大面积种植的10个早稻和10个晚稻品种为材料,分别在冲积土和红壤土2种类型稻田种植,研究早、晚稻品种在正常施肥(NPK)、不施氮肥(PK)和不施磷肥(NK)3种处理条件下的产量表现及其对土壤氮、磷素依存率和氮、磷肥贡献率的差异。结果显示,2种土壤上各水稻品种的产量总体上表现为冲积土>红壤土;早稻品种淦鑫203、先农29和晚稻品种新优752在2种土壤类型稻田同时具有高产和高氮、磷利用率特性,是较理想的品种;在施肥量上,双季稻品种在2类土壤稻田宜保持正常氮肥用量,但应适当减少磷肥用量,且冲积土稻田磷肥用量要少于红壤土稻田。
Ten early rice varieties and 10 late rice varieties planted in a large area in Jiangxi Province were used as materials to study the effects of two types of paddy fields, alluvial soil and red loam soil, on the effects of normal fertilization (NPK), no-fertilization (PK) and Yield performance and their differences in the contribution of nitrogen and phosphorus to soil nitrogen and phosphorus to phosphorus in three treatments without phosphate (NK) treatment. The results showed that alluvial soil> red loam soil was the most abundant in the two paddy cultivars. Ganxin 203, Xiannong 29 and Xinyou 752, a late rice variety, had high yield and high N, Phosphorus utilization rate was the ideal variety. In terms of the amount of fertilizers, the double-cropping rice varieties should maintain the normal nitrogen fertilizer rate in the two types of paddy soil, but the amount of phosphate fertilizer should be reduced properly, and the amount of phosphate fertilizer in the alluvial soil should be less than that of the red soil paddy soil .