关键词: 哈氏仿对虾, 哈氏仿对虾, 生长阶段, 消化酶, 非特异性免疫酶

Abstract: In order to provide theoretical basis for new simplified transplanting techniques in the rice stubble rape field in Taihu Lake areas, the differences in yield and agronomic traits of rape under different simplified transplanting methods were studied. The author studied the influences of 2 amounts of rice straw returning (A1: all rice straw returned to soil; A2: no rice straw returned to soil) and 2 transplanting methods (B1: mechanical ridging swing planting; B2: no tillage hole planting) on the yield, yield components, agronomic traits of‘Suyou 6’and analyzed the saving of labour and cost and economic benefit. The results showed that compared to no rice straw returning, the grain number of per pod, 1000-grain weight, length of main inflorescence, number of primary and secondary branches and stress resistance of rape under all rice straw returning were increased, leading to an increase in yield. The mechanical ridging swing planting achieved more primary or secondary effective branches and pods of per plant than no tillage hole planting, significantly increased the yield. Meanwhile, the mechanical ridging swing planting could help aeration and photopenetration, and also significantly improve the stress resistance and high and stable yield. Compared to the no tillage hole planting, the mechanical ridging swing planting could achieve an abridgement of 18% and net income increased by 3750 yuan/hm²; the ratio of input to output was 1:1.58. The mechanical ridging swing planting techniques with all rice straw returning could significantly increase the planting benefit and effectively relieve the labor tension in transplanting, which was suitable for popularization and application in Taihu Lake areas.