摘要
通过１９９７～１９９８年两年多点分期播种试验，统计分析盆中丘陵干旱发生规律，结合玉米生长发育对水份的需求等综合研究。四川盆中丘陵确定玉米适播期的原则，应坚持把玉米需水关键期安排在夏旱结束之后、伏旱开始之前的过程降水较丰时段。盆中以东地区适播期在 ３月 ２０日～４月 ５日，盆中以西地区适播期在 ４月 １日～１５ 日。过早过迟播种，均难夺得稳产高产。
In 1997 and 1998, the trials of different plot and sowing-date were carried out to analyze of drought in the central hilly region of Basin and study the requirement for water during maize growth. The principle of determining the suitable sowing-date was defined, which indicated maize critical time of requirement for water should be in plentiful pecipitation an between the end of summer drought and the start of hot drought. The results showed the suitable sowing-date should be from March 20 to April 5 in the east of Basin, and should be from April 1 to 15 in the west of basin. It would be difficult to achieve high and stable yields if the sowing-date was too early or too late.
出处
《西南农业学报》
CSCD
北大核心
2000年第2期39-45,共7页
Southwest China Journal of Agricultural Sciences
基金
四川省农业厅"九五"重点研究项目
