最佳收获期 meaning in English

vintage

After correlation analysis of the raw of growth and development , dry matter accumulation , rate of filling , hulk density and yield , it concluded that the best sowing - time was on 30th in april and the best harvest - time was on 5th in october
通过对生长发育规律及对干物质积累、灌溉速率、容重、产量进行相关分析，确定4月30日左右为吉油1号玉米的最佳播种期， 10月5日左右为最佳收获期。
The seeds slough seriously when they mature , thus influences seed production . from comparing the quantity and quality of seed collected at different stage , a suitable collection time should be in the 11 - 14 days after the primary blooming period , viz
通过研究不同收获时期野大麦种子的数量和质量认为，初花期后的11 - 14天为最佳收获期，实际生产中可以野大麦穗顶部刚刚开始脱落为收获标志，收获期可持续3天。