论文部分内容阅读
近几年来,由于冬季、早春气温变辐较大,对四川一些栽培柠檬的地区造成不同程度的冻害。根据我县1978年引入的柠檬栽培中对几次冻害的处理,得出以下经验。一、及时修剪 (1)嫩枝和叶片均已枯焦的部分,为了减少水分和养分消耗,应于分枝处剪除。(2)一年生枝受冻枯黄时应剪到二年生枝处。(3)受冻严重的树,必要时采取主校更新甚至截干更新。修剪后喷25％多菌灵200～300倍液,或者50％托布津100倍液,或者65％代森锌20倍液进行伤口消毒,也可喷施等量式的波
In recent years, due to the large temperature variation in winter and early spring, frost damage to some cultivated lemons in Sichuan has been caused to some extent. According to my county in 1978 introduced lemon cultivation in several frost damage treatment, draw the following experience. First, the timely pruning (1) Twigs and leaves have been burnt part, in order to reduce water and nutrient consumption, should be cut off at the branches. (2) Annual branches should be cut to two-year branches when cold and dry. (3) severely frozen tree, if necessary, take the main school update or even cut off updates. 25% carbendazim after pruning spray 200 to 300 times, or 50% Topaz 100 times, or 65% dexamethasone 20 times the wound disinfection, but also spraying the same amount of wave