Effects of planting density and spraying PP333 on winter wheat lodging-resistance and grain yield

Taking two winter wheat varieties Gaocheng 8901 and Yannong 21 with different end-use qualities as test objects, a field experiment was conducted in the experimental farm of Shandong Agricultural University from 2008 to 2010, aimed to study the effects of different planting density and spraying PP33...

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Bibliographic Details
Published inYing yong sheng tai xue bao Vol. 22; no. 6; p. 1465
Main Authors Chen, Xiao-Guang, Wang, Zhen-Lin, Peng, Dian-Liang, Li, Yong, Cai, Tie, Wang, Ping, Chen, Er-Ying
Format Journal Article
LanguageChinese
Published China 01.06.2011
Subjects
Agriculture - methods
Biomass
Ecosystem
Plant Growth Regulators - pharmacology
Plant Stems
Triticum - growth & development
Triticum - physiology
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Summary:Taking two winter wheat varieties Gaocheng 8901 and Yannong 21 with different end-use qualities as test objects, a field experiment was conducted in the experimental farm of Shandong Agricultural University from 2008 to 2010, aimed to study the effects of different planting density and spraying PP333 on the basal stem morphological characteristics, snapping-resistance, lodging-resistant index, and grain yield. Gaocheng 8901 had higher lodging-resistance but lower grain yield than Yannong 21. Comparing with low planting density (180 x 10(4) basic seedlings per hm2), high planting density (240 x 10(4) basic seedlings per hm2) decreased the culm snapping-resistance and lodging-resistant index of the two varieties, especially Yannong 21. Spraying PP333 decreased the plant height and the basal internodes length, increased the snapping-resistance and lodging-resistant index, strengthened the lodging-resistance, and improved the spike number and grain yield. Correlation analysis showed that the second internode leng
ISSN:1001-9332