播种日期 meaning in English

planting date
sowing date

The sub - model for suitable sowing or transplanting date was developed according to the principle of determining variety maturity characters from planting style , variety type from variety maturity characters and user ' s requirement , and sowing date from variety and target yields
根据种植制度(种植方式)决定品种熟性，由品种熟性与用户要求决定品种，依据品种特性和产量目标确定播种日期的原理建立播期确定知识模型。
The sub - model for design of population density was developed according to the principle of determining boll number from target yield , fruit node from boll number , fruit branch from fruit node and population density from fruit branch by integrating the effects of sowing date , cutout date , effective temperature accumulation above 12 , variety type , and fertilizer and water management levels . sowing rate was then decided by integrating the effects of different soil water and salt contents , ph , temperature and sowing style on seedling emergence rate with relative weight method
基于“以产定铃、以铃定节、以节定枝、以枝定苗”的原理，同时考虑播种日期、打顶日期、 12的有效积温、品种株型特性、肥水管理水平差异等因素来确定适宜的种植密度；在此基础上，应用相对权重法计算土壤含水量、含盐量以及整地质量和播种方式等多个生态环境因子对出苗率的综合影响，进而确定播种量。