摘要
为了探讨栽培措施对不同水稻品种产量的影响,本研究以水稻品种吉粳88、龙粳14和1769（品系）为材料,分析3个因子（施氮量、移栽密度和每穴苗数）对不同类型水稻品种产量的影响。结果表明：通过调整施氮量、密度、每穴苗数可以提高水稻产量。适当地增加移栽密度,可极显著提高水稻产量。产量与每穴苗数均呈二次回归关系,在3~5苗/穴范围内,产量随每穴苗数增加而增加,在4~6苗/穴范围,产量随着每穴苗数的增加而减少。1769最高产量可达到12 666 kg/hm2,在高产栽培中起到决定性作用的因素为施肥量,其次是每穴苗数和密度。在高密和高每穴苗数情况下,1769可以获得较高产量。而对于吉粳88和龙粳14,高产栽培主攻目标是适宜的密度、每穴苗数和较少的施肥量。
The objective of this study was to discuss the effect of cultivation measure on rice yield. Using Jiyou 1769, Jijing 88 and Longjing 14 as materials, effects of three factors （nitrogen rates, transplant densities and seed- lings per hill） on rice yield of different varieties were analyzed. The results indicated that adjusting nitrogen rates, transplant densities and seedlings per hill could raise rice yield. The rice yield raised significantly with increasing transplanting density. There was a quadratic regression relationship between the rice yield and the seedlings per hill. Within the range of 3-5 seedlings per hill, the yield increased with seedlings per hill, while within the range of 4-6 seedlings per hill, the yield decreased with seedlings per hill. The highest yield of Jiyou 1769 reached 12 666 kg/ha. Nitrogen rates played a decisive role in high-yield cultivation, secondly was seedlings per hill and transplant densities. Jiyou 1769 could reached higher yield with higher densities and seedlings per hill. The main objective of high-yield cultivation for Jijing 88 and Longjing 14 was appropriate transplant densities, seedlings per hill and lesser nitrogen rates.
出处
《东北农业科学》
2016年第6期26-30,共5页
Journal of Northeast Agricultural Sciences
基金
吉林省科技发展计划项目(20140101147JC)
吉林省科技厅产业联盟项目(2015-2017)
吉林省农业科技创新工程项目(2013-2017)
关键词
水稻
栽培措施
产量
Rice
Cultivation measure
Yield
