基于品种熟期和籽粒脱水特性的机收粒玉米 适宜播期与收获期分析

张万旭, 明博, 王克如, 刘朝巍, 侯鹏, 陈江鲁, 张国强, 杨京京, 车淑玲, 谢瑞芝, 李少昆

Analysis of Sowing and Harvesting Allocation of Maize Based on Cultivar Maturity and Grain Dehydration Characteristics

WanXu ZHANG, Bo MING, KeRu WANG, ChaoWei LIU, Peng HOU, JiangLu CHEN, GuoQiang ZHANG, JingJing YANG, ShuLing CHE, RuiZhi XIE, ShaoKun LI

表5 不同玉米品种积温需求

Table 5 Relationship between grain moisture content and accumulated temperature of different maize cultivars

品种 Cultivar 播种-授粉所需积温 Accumulated temperature from sowing to pollination (°C) 授粉-含水率降至25%所需积温 Accumulated temperature from pollination to 25% moisture content (°C) 授粉-含水率降至20%所需积温 Accumulated temperature from pollination to 20% moisture content (°C) 播种-生理成熟 所需积温 Accumulated temperature from sowing to physiological maturity (°C) 播种-含水率25% 所需积温 Accumulated temperature from sowing to 25% moisture content (°C) 播种-含水率20% 所需积温 Accumulated temperature from sowing-20% moisture content (°C) KWS9384 1509.9 1705.5 1958.2 2867.5 3043.5 3296.2 新玉77 Xinyu 77 1498.4 1768.1 2028.8 3010.1 3292.0 3552.7 M751 1503.6 1708.4 1973.1 3154.4 3358.4 3623.1