论文部分内容阅读
以龙粳31号和空育131为材料,采用随机试验设计,研究膜下滴灌旱种下肥水耦合对寒地水稻穗部性状及产量的影响。结果表明:膜下滴灌旱种下两品种的穗长、单穗重均以体积含水量降至饱和含水量的80%为控水下限的水分管理相对较大;膜下滴灌旱种下两种肥料处理对两品种穗长、单穗重、一次枝梗数的影响不显著;膜下滴灌旱种下两种水分处理对两品种一、二次枝梗数的影响不显著;膜下滴灌旱种下空育131以常规施肥量的二次枝梗数较多。膜下滴灌旱种下以体积含水量降至饱和含水量的80%为控水下限的水分管理其产量高于以体积含水量降至饱和含水量的60%为控水下限的水分管理,两品种的表现为一致的。膜下滴灌旱种下以体积含水量降至饱和含水量的60%为控水下限的水分管理,同时分蘖肥与穗肥用量为对照80%的处理两品种的经济产量均为最低。与对照相比,膜下滴灌旱种下两品种各处理的产量均表现为降低。空育131以体积含水量降至饱和含水量的80%为控水下限的水分管理,同时分蘖肥与穗肥用量同对照相同的处理(S2F2)最适合膜下滴灌旱种;龙粳31号以体积含水量降至饱和含水量的80%为控水下限的水分管理,同时分蘖肥与穗肥用量为对照的80%的处理(S2F1)最适合膜下滴灌旱种。
Taking Longjing 31 and Kongyu 131 as materials, a randomized trial design was conducted to study the effects of fertilizer and water coupling under drip irrigation under dry film mulching on panicle traits and yield in cold regions. The results showed that under the drip irrigation, the spike length and the single spike weight of the two cultivars under watering were relatively large when the volumetric water content decreased to 80% of the saturated water content, The effect of fertilizer treatment on spike length, single spike weight and primary branch number of two cultivars was not significant. The effects of two treatments on the primary and secondary branch numbers of two cultivars were not significant under drip irrigation. The number of secondary branches of Kongyu 131 with conventional fertilization was higher. Under film drip irrigation under dry farming with volumetric water content down to 80% of saturated water content as the water control lower limit of the water yield higher than the volumetric water content to 60% of the saturated water content as the water control lower limit of water management, two The performance of varieties is consistent. Under dry-mulching drip irrigation, 60% of the volumetric water content decreased to saturated water content as the water management with the lower limit of water control, while 80% of the total amount of tillering fertilizer and panicle fertilizer was the lowest. Compared with the control, the drip irrigation under the mulching two varieties of each treatment yield showed decreased. In Kongyu 131, the volumetric water content decreased to 80% of the saturated water content as the water management with the lower limit of water control, and the same treatment of the same amount of tillering fertilizer and panicle fertilizer (S2F2) 80% of the saturated water content decreased from the volumetric water content to the lower water content, and 80% of the total amount of tillering fertilizer and panicle fertilizer (S2F1) was the most suitable for the drip irrigation.