缓控释肥用量与种植密度对稻田免耕玉米农艺性状及产量的影响

Effects of fertilizer and planting density on yield and agronomic traits of non-tilling maize planted on rice field

以甜玉米桂星为试验材料,采用二因素裂区设计,以金正大控释肥(20-10-11)用量(A)为主处理、设4个水平,种植密度(B)为副处理、设4个水平,探讨不同缓控释肥用量和种植密度对秋稻田免耕鲜食玉米产量及农艺性状的影响。结果表明,每公顷产量达到12 000 kg以上的处理有6个,分别为A4B3、A4B4、A3B3、A3B4、A4B2、A3B2,结合产量、农艺性状及肥料投入多方面考虑,建议在生产上以A3B3处理(肥料600 kg/hm2,密度57 000株/hm2)为最佳选择方案。

Taking maize variety Guixing as material, experiments were carried out by two factors split plot design, setting slow controlled-release fertilizer rate as main treatment with 4 levels, and planting density as auxiliary treatment with 4 levels, effects of slow controlled-release fertilizer and planting density on yield and agronomic traists of non- tilling maize variety Guixing planted on the rice field were studied. The results showed that yield 0- 6 treatments were more then 12 000 kg per hectare, which were A4B3, A4B4, A3B3, A3B4, A4B2 and A3B2. A3B3 treatment （ fertilizer of 600 kg/hm^2, planting deasity of 57 000 plants/hm^2 ） was suggested the best treatment according to yield, agronomic traits and fertilizer input.