Effects of Optimized Measures on Characteristics of Source-Sink and Yield Formation of Special Rice
Using rotation combination design of three factor and two orthogonal regression and taking the Glutinous rice Three Gorges Nuo No.1 as material,the mathematical model of planting density,urea administration,transplant time correlted with yield special rice was established.Through simulation and optimization,the Glutinous rice three Gorges Nuo No.1 had a yield of 8 362.87 kg/hm2 or more.The planting density was 23.48×104～26.65×104 point/hm2.Urea content was ranged from 194.41 to 259.53 kg/hm2.Transplant time was 3.73～5.27 leaves.The results of high yield showed that the seed-setting rate of the Glutinous rice Three Gorges Nuo No.1 was 19.48％ higher than that of the Shengtai No.1 CK).The heading,leaf area index of mature stage and maturity stage,the above ground dry matter weight were increased by 23.69％,67.66％ and 12.20％.The extinction coefficient at full heading stage and from heading to maturity leaf area attenuation rate were negatively correlated with yield.The Glutinous rice Three Gorges Nuo No.1 had the big Sink and adequate sources.
special riceThree Gorges Nuo No.1sink-source characteristicsoptimum cultivationyield model
NETL
NSTL
万方数据
维普
