双季稻适用型“湘紫2号”紫云英的种植表现及高产栽培技术

Planting Performance and High-yielding Cultivation Techniques of New Milk Vetch Variety“Xiangzi No. 2”Suitable for Double-rice Cropping System

[目的]针对目前南方双季稻区适用型紫云英品种缺乏的现状,湖南省土壤肥料研究所选育出了适于在双季稻区种植利用的紫云英新品种湘紫2号。[方法]通过开展多点田间品种比较试验和示范,了解湘紫2号的生长特性及其高产栽培技术。[结果]湘紫2号在湖南双季稻区种植表现出极早花、适产、养分含量高、抗性好、耐迟播、适应性广等优点。其高产栽培技术要点包括及早开沟,科学施肥,施用磷钾肥以小肥换大肥,注意防治病虫害,适时翻沤。[结论]湘紫2号的推广应用对解决原有紫云英品种与双季稻种植上季节不相匹配的问题具有重要意义,有利于恢复和发展紫云英生产、培肥地力和提高土地综合生产力。

[Objective]A new milk vetch variety Xiangzi No. 2 was bred by Soil and Fertilizer Institute of Hunan Province,which was suitable for planting in double-rice cropping field in south China. [Method]Comparative tests for Xiangzi No. 2 were carried out in double-rice regions of Hunan Province to investigate its growth characteristics and discuss its high-yielding cultivation techniques. [Result]Xiangzi No. 2 showed main characteristics such as extremely early-blossoming,optimal fresh grass yield,high nutrient contents,good resistance,tolerance of late sowing and wide adaptability. The high-yielding cultivation techniques were including early furrowing,scientific fertilization,comprehensive prevention of diseases and insect pests and timely ploughing fresh grass. [Conclusion]The cultivation and popularization of Xiangzi No. 2 in double-rice cropping areas in south China was important to solve the problem of time inconsistency between previous milk vetch variety cropping and early-rice cropping,and had potential effects on increasing soil fertility and soil comprehensive productivity.