湿润灌溉下晚稻肥料运筹方式研究

摘要

Hybrid rice ‘Shengtaiyou 018’was used to investigate the water and fertilizer-saving cultivation technolo-gy. Under the condition of moistening irrigation and applied N 150 kg/hm2 ,through 6 fertilizer management pattern:NPK=1∶0. 5∶1 or 1∶0. 6∶1. 2 combined with base fertilizer(B)∶tillering fertilizer(T)∶earing fertilizer(E)=4∶3∶3、5∶3∶2 or 6∶3∶1. The influence of different fertilization methods on rice root、leaf group quality and yield formation,and their relation-ship were researched,and the relatively optimal fertilization technology was screened out. Results showed that:under the condition of this research,the fertilization pattern of NPK=1∶0. 5∶1 and B∶T∶E=5∶3∶2 or NPK=1∶0. 6∶1. 2 and B∶T∶E=6∶3∶1 ,may better regulate and control the rice to grow more reasonable roots and population leaf structure,and gain higher economic yield. It is the relative optimal fertilizing pattern in this experiment.%为探索晚稻节水节肥栽培技术，以‘盛泰优018’为材料，在湿润灌溉和施纯氮150 kg／hm2条件下，设置6种肥料运筹方式，研究施肥对水稻根、叶群体质量和产量形成的影响及相互关系，以筛选出相对最优的施肥技术。结果表明：在本研究条件下，按NPK＝1∶0.5∶1、基蘖穗肥＝5∶3∶2或NPK＝1∶0.6∶1.2、基蘖穗肥＝6∶3∶1的施肥技术方案能够较好地调控水稻，构建出较合理的根、叶群体结构，获得较高的经济产量，为本试验中相对较优的晚稻肥料运筹方式。