调环酸钙对小麦群体性状和产量的调控作用

为研究调环酸钙对小麦群体性状和产量的影响,应用不同剂量的10%调环酸钙泡腾颗粒剂在襄阳和东明等地进行田间试验。结果表明,在小麦拔节前施用调环酸钙10%泡腾颗粒剂10~100 g/667 m2,可矮化植株高度,缩短节间长度、增加茎粗,并能增加穗长,提高千粒重和产量。其中,施用10%调环酸钙泡腾颗粒剂50 g/667m2处理的产量最高,在襄阳和东明两地产量分别达476.36 kg/667 m2和570.85 kg/667 m2,比对照分别增产13.27%和11.80%。10%调环酸钙泡腾颗粒剂各用量均对小麦安全,无药害产生。

Effect of Prohaxiadione-calcium on Group Characters and Yield of Wheat

In order to explore the effect of Prohexadione-calcium (ProCa) to group characters and yield of wheat, the field experiment was conducted with ProCa 10% KPP applied on wheat in Xiangyang and Dongming respectively. The results showed that ProCa had the properties such as dwarfing plant height, reducing internode length, increasing stem diameter, al-so increasing panicle length, 1000 grain weight and yield when it was applied with the dosage from 10 to 100 g/667 m2 before jointing stage. It was the most effective that ProCa 10% KPP sprayed with the dosage of 50 g/667 m2. Their yield were 476.36 kg/667 m2 in Xiangyang and 570.85 kg/667 m2 in Dongming and increased by 13.27% and 11.80% respectively compared with contrast design (CK). ProCa 10% KPP was safe to wheat and had no observable phytotoxicity within each dosage in this experiment.