In general, determining suitable seeding and harvesting times is important in achieving high yields of forage crops in terms of both physiology and ecology. To determine the optimum point, the response surface methodology (RSM) is well known in agricultural science. This study aimed to establish optimum seeding and harvesting dates and to verify the variation of dry matter yield (DMY) for sorghum–sudangrass hybrid (SSH), by determining what we called the “optimum moving RSM” proposed to optimize the RSM in the metadata. The SSH metadata consist of individual experiments (n = 856) that were performed to check the optimum seeding and harvesting dates using classic RSM. However, the SSH metadata failed to produce a single effective equation to determine the optimum seeding and harvesting dates due to the different characteristics of the experimental design. Therefore, the optimum moving RSM was introduced. As a result, we found that the optimum seeding and harvesting dates were clear, based on a single quadratic function. The maximum DMY at the optimum seeding and harvesting dates (the 4th of May and 23rd of September, respectively) was 25,404.50 and 23,697.01 kg/ha, respectively. SSH yield decreases rapidly from 10 days after the optimum date, and seeding and harvesting should be performed within 5 days to ensure a stable yield. Furthermore, the optimum moving RSM is expected to be useful to establish the optimum point in the metadata.

中文翻译：

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高粱-苏丹草杂交（高粱）的最佳播种和收获日期

一般而言，就生理和生态而言，确定合适的播种和收获时间对于获得高产的饲用作物很重要。为了确定最佳点，响应面方法（RSM）在农业科学中是众所周知的。这项研究旨在确定最佳的播种和收获日期，并通过确定我们所谓的“最佳移动RSM”（旨在优化元数据中的RSM）来验证高粱-苏丹草杂交种（SSH）的干物质产量（DMY）的变化。 。SSH元数据包含单个实验（n = 856），以使用经典RSM检查最佳播种和收获日期。但是，由于实验设计的不同特征，SSH元数据未能生成一个有效方程式来确定最佳播种和收获日期。因此，引入了最佳移动RSM。结果，我们发现基于单个二次函数，最佳播种和收获日期是明确的。在最佳播种和收获日期（分别为5月4日和9月23日）的最大DMY分别为25,404.50和23,697.01 kg / ha。从最佳日期开始的10天后，SSH产量迅速下降，应在5天内进行播种和收获，以确保稳定的产量。此外，