The suitable plant density was favorable for sorghum yield increase. In order to clarify the suitable plant density of dwarf-stem, early-maturing sorghum variety ＇Jiza141 ＇, in the open field condition,150 000, 200 ...The suitable plant density was favorable for sorghum yield increase. In order to clarify the suitable plant density of dwarf-stem, early-maturing sorghum variety ＇Jiza141 ＇, in the open field condition,150 000, 200 000, 250 000, 300 000 and 350 000 plants/hm^2 tests were set to study the effect of different densities on yield and yield traits. The results showed that with the increase of planting density, LAI increased, chlorophyll content decreased, plant length had no significant difference, era length and era diameter tended to decrease, while biomass increased with the increase of density. The 1000-grain weight and single panicle weight had the maximum effects on yield, and both of them showed a significantly positive correlation with the yield. In Jiamusi growing areas, the optimal plant density of sorghum ＇Jiza141＇ was 200 000 plants/hm^2, and the yield could reach 9 183.00 kg/hm^2. The study provides a theo- retical basis and technical support for the ＇Jiza141＇ variety in the Jiamusi ecological region.展开更多
基金Supported by Seed Innovation Foundation of Heilongjiang Province Agricultural S&T Innovation Engineering(2013-03-02)~~
文摘The suitable plant density was favorable for sorghum yield increase. In order to clarify the suitable plant density of dwarf-stem, early-maturing sorghum variety ＇Jiza141 ＇, in the open field condition,150 000, 200 000, 250 000, 300 000 and 350 000 plants/hm^2 tests were set to study the effect of different densities on yield and yield traits. The results showed that with the increase of planting density, LAI increased, chlorophyll content decreased, plant length had no significant difference, era length and era diameter tended to decrease, while biomass increased with the increase of density. The 1000-grain weight and single panicle weight had the maximum effects on yield, and both of them showed a significantly positive correlation with the yield. In Jiamusi growing areas, the optimal plant density of sorghum ＇Jiza141＇ was 200 000 plants/hm^2, and the yield could reach 9 183.00 kg/hm^2. The study provides a theo- retical basis and technical support for the ＇Jiza141＇ variety in the Jiamusi ecological region.
