Research on adaptability of different forage sorghum crops in western Heilongjiang province
In order to screen the forage varieties of sorghum suitable for planting in the western area of Heilongjiang province,the phenological period,main agronomic traits,yield traits and quality indexes of 5 Sorghum bicolor(Big kahuna,Niu mo wang,Hainiu,Battle,Sweet Caroline),2 Sorghum×Sudangrass(Pacemaker,Jiebao),1 Sudangrass(Surubi)were compared and analyzed.The results showed that none of the 8 varieties had completed the growth period;Niu mo wang and Sweet Caroline stem diameter was the largest,and the comprehensive ability of lodging resistance and pest resistance was strong;Big kahuna,Niu mo wang,Sweet Caroline,Jiebao showed brown midvein characteristics;The highest hay yield of Battle was 24944.91 kg/hm2,while the lowest yield of Surubi was 13678.50 kg/hm2,which was significantly different.The crude protein content of Jiebao and Niu mo wang was the highest,and Surubi and Battle had better relative feeding value.The comprehensive evaluation by the method of membership function showed that Niu mo wang and Battle had the highest comprehensive evaluation,which were suitable for spreading planting in the western region of Heilongjiang province.
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