Lü Shu-Min, Qu Xiao-Fei, Wang Lin-Hua, Liang Shu-Rong, Wang Jun-Zhong, Zhao Hui-Jie
College of Agronomy, Henan Agricultural University, Zhengzhou 450002, China.
Ying Yong Sheng Tai Xue Bao. 2010 Feb;21(2):338-43.
15000, 22500, and 30000 kg x hm(-2) of biogas liquid manure were applied to maize hybrid Zhengdan 958 to study their effects on the key source-sink metabolism enzymes and yield components of the summer maize. Compared with CK and applying nitrogen fertilizer, the application of biogas liquid manure not only increased the aboveground biomass, leaf area index (LAI) and chlorophyll content, but also enhanced the activities of nitrate reductase (NR), glutamine synthetase (GS), and sucrose phosphate synthetase (SPS) in leaves and the sucrose synthetase (SS) in grains. The yield parameters such as ear diameter, ear length, grain rows per ear, grains per row, kernels per ear, 1000-kernel mass, and grain yield per unit area were also increased significantly. Of the three test application rates, 22500 kg x hm(-2) (7500 kg x hm(-2) applied at jointing, big trumpet, and tasseling stages, respectively) had the best effects on enhancing the above mentioned enzyme activities and grain yield, with the yield reached 14006.7 kg x hm(-2) and being 40.7% higher than the control.
分别以15000、22500和30000 kg·hm⁻²的沼液用量施用于玉米杂交种郑单958，研究其对夏玉米关键源库代谢酶及产量构成因素的影响。与对照和施用氮肥相比，施用沼液不仅增加了地上生物量、叶面积指数（LAI）和叶绿素含量，还提高了叶片中硝酸还原酶（NR）、谷氨酰胺合成酶（GS）和蔗糖磷酸合成酶（SPS）以及籽粒中蔗糖合成酶（SS）的活性。穗直径、穗长、穗行数、每行粒数、每穗粒数、千粒重和单位面积籽粒产量等产量参数也显著增加。在三个试验施用量中，22500 kg·hm⁻²（分别在拔节期、大喇叭口期和抽雄期各施用7500 kg·hm⁻²）对提高上述酶活性和籽粒产量的效果最佳，产量达到14006.7 kg·hm⁻²，比对照高40.7%。
