农业工程学报2012，Vol.28Issue(8)：98-104,7.DOI:10.3969/j.issn.1002-6819.2012.08.015
机插水稻适宜基本苗定量参数的获取与验证
Calculation and verification of quantitative parameters of optimal planting density of machine-transplant rice
摘要
Abstract
Based on the calculation of transplant rice,taking conventional japonica rice (Ningjing-3) and hybrid japonica rice (Changyou-1) as material,different planting density experiments were conducted to determine the parameters in planting density quantitative equation of machine-transplant rice. Then optimized cultivation program for machine-transplanting rice was designed using the machine-transplanting rice cultivation system and the designed leaf area index at heading,dry matter at maturity,harvest index,yield and yield components were compared with the measured values in the experiments. The results showed that missing tiller number of the machine-transplant conventional japonica rice and hybrid japonica rice was 1.5 and 0.5,respectively. Seedling number per hole significantly affected the adjusting factor in plant density quantitative equation. Highest yield was obtained for conventional japonica rice with 3 seedlings per hole and for hybrid japonica rice with 2 seedlings per hole,respectively. Thus,the adjusting factor was set to be 1.5 for conventional japonica rice and 1.0 for hybrid japonica rice. The tiller emerging rates after transplanting were 0.8 for both conventional and hybrid japonica rice. The comparison showed that the deviation between designed and average measured values was less than 5%,which verified the reliability of parameters in planting density quantitative equation for machine-transplanted rice. This research provides a technology support for accurately determining planting density for machine-transplant rice.关键词
参数获取/验证/农学/机插/水稻/基本苗Key words
parameter extraction/verification/agronomy/machinical transplanting/rice/plant density分类
农业科技引用本文复制引用
李刚华,于林惠,侯朋福,王绍华,刘正辉,王强盛,凌启鸿,丁艳锋..机插水稻适宜基本苗定量参数的获取与验证[J].农业工程学报,2012,28(8):98-104,7.基金项目
948项目(2011-G18),国家“十二五”科技支撑计划(2011BAD16B14) （2011-G18）
农业成果转化资金项目(2010GB23600670) （2010GB23600670）
