Abstract:

Using Longgeng 31 as the test variety, an experiment on the application effects of different fertilization techniques (conventional fertilization, lateral depth quantitative fertilization, lateral depth variable fertilization) on rice was carried out at Qixing Branch of Beidahuang Agriculture Co., Ltd. The results showed that the growth process of rice was basically the same in all fertilization treatments. The tillering ability of rice treated with lateral deep variable fertilization was the strongest, with a tiller number of 13.6 per cluster, which was 0.4 and 0.3 higher than that of the conventional fertilization treatment and the lateral depth quantitative fertilization treatment, respectively. The rice yield of the lateral depth variable fertilization treatment was highest, reaching 9 085.5 kg/hm², which increased by 247.5 kg/hm² and 54.0 kg/hm² respectively compared to the conventional fertilization treatment and the lateral depth quantitative fertilization treatment. The lateral depth variable fertilization mainly increased yield by increasing the number of effective panicles. The benefit of lateral depth variable fertilization treatment is the highest, which is 298.5 and 192.3 yuan/hm² higher than conventional fertilization treatment and lateral depth quantitative fertilization treatment, respectively.

Key words: rice, lateral depth variable fertilization, yield, benefit

摘要： 以龙粳31为供试品种，在北大荒农业股份有限公司七星分公司开展不同施肥技术（常规施肥、侧深定量施肥、侧深变量施肥）在水稻上的应用效果试验。结果表明，各施肥处理的水稻生育进程基本一致；侧深变量施肥处理水稻分蘖能力最强，分蘖数达13.6个/丛，分别较常规施肥处理和侧深定量施肥处理高0.4和0.3个/丛；侧深变量施肥处理水稻产量最高，达9 805.5 kg/hm²，较常规施肥处理和侧深定量施肥处理分别增产247.5和54.0 kg/hm²，这一增产效果主要通过提高有效穗数来实现；侧深变量施肥处理的效益最高，较常规施肥处理和侧深定量施肥处理分别高298.5和192.3元/hm²。

关键词: 水稻, 侧深变量施肥, 产量, 效益