Ningxia rainy weather is not conducive to late growth

Starting from the 14th, the bursts of water from time to time made the continuous high temperature and hot weather before Ningxia completely shaken. From August 14th to 19th, the cumulative precipitation in most parts of Ningxia reached 10-125.3 mm. Among them, 27 stations in the eastern part of Yinchuan City, the southern part of Zhongwei City and the Gupan area of ​​Guyuan had a cumulative precipitation of more than 50 mm. Although precipitation has eased the drought in most parts of central and southern Ningxia, it is also beneficial for the recovery of autumn crops. However, it has adverse effects on the bud and flowering of the two-year-old 枸杞秋秋, and it also provides suitable meteorological conditions for the outbreak of anthracnose and black fruit disease.

According to the appropriate agro-meteorological indicators of anthracnose, when the precipitation exceeds 20 mm or the continuous precipitation time exceeds 12 hours, the temperature is within the appropriate range, which will cause the epidemics of field anthrax, and the damage rate is over 50%. When the rainfall increases to 40 mm, the black fruit disease will be outbreaks, and 50% to 80% of the fruit will be infected or blackened. Although it is said that the harvest of summer fruit in Ningxia irrigation area has basically ended, the mountainous area in central and southern China is nearing the end. The anthracnose caused by the continuous rainfall process has little effect on the quality of Ningxia Xiaxia fruit, but for The bud and flowering of autumn fruit may cause adverse effects.

In view of the impact of long-term rainy weather on the growth of alfalfa, relevant experts suggest that the weather forecast should be paid attention to, and the fungicide should be sprayed according to the weather conditions for prevention and control. First, spray it in time before the rain, and spray it once after the rain.