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在1979年夏季,对茶园喷灌的小气候效应及其对茶叶产量品质的影响,进行了研究。 茶园喷灌后,土壤温度和空气温度的日变幅明显减少,土壤温度和空气温度的垂直分布差异缓和,土壤和空气湿度增大。 喷灌茶园的降温增湿效应,喷灌期间比喷灌结束后明显,白昼比夜间明显,晴天比阴天明显,接近地表的土壤和空气比远离地表的土壤和空气明显。 大田试验结果,喷灌比不喷灌增产11.2％,小区试验增产4.0-38.9％,喷灌可增进茶叶品质,氨基氮增加19.91—39.51mg％,水分增加2.1—4.5％,芽叶纤维素减少0.39—0.98％。
In the summer of 1979, the microclimate effects of sprinkler irrigation in tea gardens and their effects on tea yield and quality were studied. After sprinkling the tea plantation, the daily variation of soil temperature and air temperature decreased obviously, the vertical distribution of soil temperature and air temperature relaxed and the soil and air humidity increased. The effect of cooling and humidifying sprinkling tea plantation was obvious during the sprinkler irrigation period than that at the end of sprinkler irrigation. The daytime was more obvious than the nighttime, and the sunny days were more obvious than the cloudy days. The soil and air close to the surface were more obvious than the soil and air far away from the surface. Field test results showed that spray irrigation increased yield by 11.2% and non-spray irrigation increased yield by 4.0-38.9%. Sprinkler irrigation improved tea quality by 19.91-39.51mg% for amino nitrogen, 2.1-4.5% for water, 0.39-0.98 for shoot bud cellulose %.