摘要
以中棉所50为材料,采用大田试验,进行了黄淮海地区麦后直播短季棉密度及叶龄化控的研究。结果表明,中等以上肥力的麦田,麦收后及时整地造墒施足基肥,直播短季棉中棉50,留苗密度12万～15万株/hm2,缩节胺总用量143.5 g/hm2,采用"早、轻、勤"叶龄模式化控技术,全生育期进行6次化控,塑造最大叶面积系数为4左右的理想群体结构,皮棉产量达到1 481 kg/hm2,霜前花率92.3%。
Through the field test,Zhongmian 50 were selected as the material,the density of short-season cotton direct-seeded after wheat harvest and chem-controlling of leaf age mode in Huang-Huai region were studied.The results showed that preparing soil,build soil moisture and applying enough base fertilizer in time after wheat harvest in the wheat field of superior fertility,the density of seedlings of Zhongmian 50 was 120 000~150 000/hm2,the total dosage of DPC was 143.5 g/hm2,＂early,light,hardworking＂ chem-controlling technology was used in the leaf age mode,chem-controll was used for 6 times in the whole growth period and the ideal population structure which is the maximum leaf area index 4 was shaped,output of ginned cotton reach 1 481 kg/hm2,the ratio of flower was 92.3% before frost.
出处
《广东农业科学》
CAS
CSCD
北大核心
2012年第7期52-53,共2页
Guangdong Agricultural Sciences
基金
商丘市科技攻关项目(2009020046)
关键词
黄淮海地区
短季棉
密度
叶龄
Huang-Huai region
short-season cotton
density
leaf age
