Compared with single agronomic practices management during grain formation, knowledge about integrated agronomic practices management on grain-filling characteristics and physiological function of endogenous hormones was limited. In order to clarify this issue, two field experiments, integrated agronomic practices management (IAPM), T1 (local conventional cultivation practices), T2 (an optimized combination of cropping systems and fertilizer treatment), T3 (treatment based on high-yield studies), and T4 (further optimized combination of cropping systems and fertilizer treatment), and nitrogen rate testing (NAT) (four nitrogen rates, 0, 129.0, 184.5, and 300.0 kg N ha⁻¹) were performed with summer maize hybrid Zhengdan 958 (ZD958). Results showed that with increased nitrogen rate, the endogenous hormone balance was promoted and the grain-filling characteristics were improved sufficiently to resulting in a significant increase in grain yield. However, the grain-filling characteristics deteriorated and yield was reduced with excessive nitrogen fertilization. However, IAPM could promote hormone balance and improve grain filling characteristic. The indole-3-acetic acid (IAA), zeatin riboside (ZR), and gibberellin (GA₃) contents under T2 and T4 treatments were higher and the abscisic acid (ABA) content was lower, and the ZR and GA₃ contents under T3 were higher than those under T1. Those resulted in the maximum grain-filling rate (W_max) and the active grain-filling period (P) under T2, T3 and T4 were significantly increased than those under T1, and hence promoted kernel weight and grain yield. So IAPM promoted hormone balance by improving tillage model, optimizing fertilizer rate and fertilization period, appropriately increasing planting density and delaying harvest, which promoted grain filling rate and lengthened active grain-filling period, finally increased grain yield.

与谷物形成过程中的单一农艺措施管理相比，有关综合农艺措施管理对内源激素的籽粒灌浆特性和生理功能的了解有限。为了弄清这个问题，进行了两个田间试验，综合农艺措施管理（IAPM），T1（当地常规耕作方法），T2（种植系统和肥料处理的优化组合），T3（基于高产研究的处理） ，T4（进一步优化的种植系统和肥料处理的组合）和氮素含量测试（NAT）（四种氮素含量分别为0、129.0、184.5和300.0 kg N ha ^-1）使用夏玉米杂交种正单958（ZD958）进行。结果表明，随着氮素含量的增加，内源激素平衡得到促进，籽粒的充实特性得到充分改善，从而导致籽粒产量显着提高。然而，由于过量施氮，籽粒的灌浆特性变差并且产量降低。但是，IAPM可以促进激素平衡并改善谷物填充特性。所述吲哚-3-乙酸（IAA），玉米素核苷（ZR）和赤霉素（GA ₃）根据T2和T4处理含量较高和脱落酸（ABA）含量较低，和ZR和GA ₃项内容T3高于T1。这些导致最大的谷物填充率（W_最大值和T2，T3和T4下的活跃籽粒充实期（P）明显高于T1下的籽粒，从而提高了籽粒重量和籽粒产量。因此，IAPM通过改善耕作模式，优化肥料用量和施肥周期，适当增加播种密度和延缓收获来促进激素平衡，从而提高了籽粒灌浆率并延长了活跃的籽粒灌浆期，最终提高了谷物产量。