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晚稻测土配方施肥“3414”肥效试验 总被引:3,自引:0,他引:3
为了探索广西田东县晚稻生产的最佳经济施肥量和最高产量施肥量2,009年在该县祥周镇百渡村那中屯开展晚稻测土配方施肥"3414"肥效试验。结果表明,N是影响水稻分蘖数量及产量的主要养分因子;供试田块土壤中有效养分丰缺程度表现为低N、高P、高K;田东县晚稻生产每公顷最佳经济施肥量为:N 174.4 kg、P2O5 70.4 kg、K2O 114.9kg,最高产量施肥量为:N 177.4 kg、P2O5 70.9 kg、K2O 119.6 kg。 相似文献
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Growth inhibition by adenosine 3',5-monophosphate derivatives does not require 3',5' phosphodiester linkage 总被引:3,自引:0,他引:3
Analogs of adenosine 3',5'-monophosphate (cyclic AMP) inhibit the growth of cultured cell lines. The effects of 8-bromo- and N6-butyryl-substituted analogs of cyclic and noncyclic AMP on six cell lines were examined and were equally inhibitory. Variant cell lines with altered cyclic AMP-dependent protein kinase were more resistant to both cyclic and noncyclic nucleotides. We conclude that growth inhibition by analogs of cyclic AMP (i) does not require a 3',5' phosphodiester bond and (ii) may be mediated by a pathway involving endogenous cyclic AMP. 相似文献
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