麦绿素加工专用大麦产量与气象因子的关系

以两个大麦品种为材料，在杭州条件下分7期播种，研究了麦绿素加工专用大麦产量与气象因子的关系．结果表明，第一收获期产量与播种后第1旬平均温度呈显著正相关，与第1、2旬的累积雨量显著负相关；第二收获期产量与第一次刈青后第2旬平均温度、第3旬降雨量显著正相关；三期总产量与播种后第2旬的平均温度呈极显著正相关，与第6旬平均温度呈极显著负相关．分别建立了第一收获期产量、三期总产量与生长天数、积温、降雨量及播种后第1、2、3旬平均温度的一元二次回归模型，寻优获得了在第一收获期高产基础上获较高总产量的适宜气象生态条件．

Relationship between Climatic Factors and Yield of Barley Leaves used for Processing Barley Green

This experiment is carried out to study the effect of climatic condition on yieldof barley leaves used for processing of barley green and their relationship by using two barleycultivars with seven sowing dates in Hangzhou. The results show that the yield of first-termharvesting has a significantly positive correlation with the mean daily temperature of 10 daysafter sowing, while a significantly negative correlation with the total precipitation of the first andsecond ten days after sowing. Meanwhile, a significantly positive correlation is observed betweenthe biomass yield of the second-term harvesting and mean daily temperature of the second 10days and total precipitation of the third 10 days after first cutting, and as well as between thetotal yield and mean daily temperature of the second 10 days after sowing, while a negativecorrelation is found between total yield and mean daily temperature during 50-60d after sowing.Furthermore, curvilinear regression between the first-term harvesting or total yields and growthduration, accumulated temperature, precipitation and mean daily temperature of the initial three10 days after sowing are established, and according to these equations the optimal meteorologicalcondition is determined for high total yield.