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我国柑桔产区,除四川、广西、广东和福建外,其余省份在冬季发生大寒潮时,都会遭到不同程度的冻害。现就几种改善小气候,防寒抗冻措施的效应分述如下: 一、灌水喷水 1978年元月5日和25日,我们对3株同品种的桔树灌水两次,每次每株灌水5担,测得的结果是,1—2月平均土壤相对含水量:0—20厘米土层湿度较对照提高8.1％,20—40厘米土层湿度较对照提高10.3％。地面最低温度提高0.6℃。从上
In addition to Sichuan, Guangxi, Guangdong and Fujian, the citrus producing areas in our country suffer from various degrees of frost damage when there is a big cold wave in winter. Now on several to improve the microclimate, cold frost measures are as follows: First, irrigation water January 5, 1978 and 25, we are the same species of orange tree irrigation twice, each plant irrigation 5 Tam, the measured results are from January to February the average relative soil moisture content: 0-20 cm soil moisture increased 8.1% compared with the control, 20-40 cm soil moisture increased by 10.3% over the control. Ground minimum temperature increased by 0.6 ℃. from up