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在冀西北,黑绒金龟甲发生轻重取决于当年3-4月份的气温和降雨;适度的降雨和连续的升温是偏重发生的重要条件。如果连续干旱或连续低温,对黑绒金龟甲发生不利。
In northwestern Hebei, the severity of the tortoise shell depends on the temperature and rainfall in March-April of that year. Moderate rainfall and continuous warming are important prerequisites. If the continuous drought or continuous low temperature, on the cashmere tortoise adverse.