不同新型肥料作基肥对机插双晚常规粳稻分蘖和主要性状的影响

Effects of Different New Fertilizers as Base Fertilizer on Tillers and Main Characters of Machine Transplanted Double Late Conventional Japonica Rice

以复合-秸混肥、缓释肥、有机-无机复混肥为供试新型肥料,以镇稻18为供试品种,设置同田对比试验,研究新型肥料在机插双季晚粳生产中作基肥后不再追施穗肥的应用效果。结果表明,不同新型肥料作基肥后的秧苗分蘖动态存在差异,对生育性状影响较小,对经济产量有影响但处理间差异未达显著水平(F=4.69,F_(0.05)=6.94)。在试验用量下,复合-秸混肥处理和缓释肥处理在水稻生长后期未表现脱肥特征,结实率、千粒重和收获指数较高,可以作为不施穗肥的基肥使用;有机-无机复混肥处理在水稻生长后期表现较明显的脱肥特征,结实率、千粒重和收获指数偏低,在提倡化肥减量政策下,不宜作为不施穗肥的基肥使用。

Compound straw mixed fertilizer,slow-release fertilizer and organic-inorganic compound fertilizer were used as new fertilizer,Zhendao 18 was used as test variety,and the same field comparative experiment was set to study the application effect of the new fertilizer as base fertilizer and no ear fertilizer in the production of machine inserted double cropping late japonica.The results showed that there were differences in tillering dynamics of seedlings after using different new fertilizers as base fertilizer,which had little effect on growth characters,and had effect on economic yield,but the difference between treatments did not reach a significant level(F=4.69,f_(0.05)=6.94).Under the experimental dosage,the compound straw mixed fertilizer treatment and slow-release fertilizer treatment did not show the characteristics of fertilizer removal in the later stage of rice growth,and the seed setting rate,1000-grain weight and harvest index were high,which could be used as the base fertilizer without panicle fertilizer;Organic-inorganic compound fertilizer treatment showed obvious fertilizer removal characteristics in the later stage of rice growth,and low seed setting rate,1000-grain weight and harvest index were low.It should not be used as base fertilizer without panicle fertilizer under the policy of promoting chemical fertilizer reduction.