Study on Anti-freezing and Disaster Reduction Technology of Blueberry in Open Field under Elate Spring Coldness in Yunnan
The open-field blueberry planted in Qujing area of Yunnan province is susceptible to late spring cold and low temperature damage,resulting in a 50％-70％reduction in blueberry yield,which seriously affects yield and causes huge economic losses.The anti-freezing experiment of blueberry cultivated in open field was earried out in Qujing area.The results showed that the use of anti-frost fan,traditional smoke burning and pesticide could reduce the frost damage by 21％-34％,increase the fruit setting rate by 22％-31％,and increase the yield per plant by 0.5-1 kg.The use of anti-frost fan had the best effect,which could increase the surface environment temperature by 1.5-2.6 ℃,effectively reduce the frost damage by 34％,increase the fruit setting rate by 31％,and increase the yield per plant by 1 kg,restore the yield of 380 kg/667 m2,restore output value of 19 000 yuan/667 m2.
Blueberry in open fieldelate spring coldnessanti-freezing and disaster reduction
万方数据
维普
