Li Long, Pu Rong-Feng, Li Ming-Hua, Dai Chun-Yan, Zheng Kai, Jin Zheng-Qiang, Mo Chen-Bing, Cui Xiu-Ming, Yang Ye
Yunnan Key Laboratory of Panax notoginseng,School of Life Science and Technology, Kunming University of Technology Kunming 650050, China.
Zhongguo Zhong Yao Za Zhi. 2022 Feb;47(3):635-642. doi: 10.19540/j.cnki.cjcmm.20211106.101.
The continuous cropping obstacle of Panax notoginseng is serious, and effective control measures are lacking. Soil disinfection with chloropicrin(CP) has been proven to be effective in reducing the obstacles to continuous cropping of other crops. In order to ascertain the effect of CP in the continuous cropping of P. notoginseng, this paper explored the influences of CP at different treatment concentrations(0,30,40,50 kg/Mu, 1 Mu≈667 m~2) on soil macro-element nutrients, soil enzyme activity, growth and development of P. notoginseng, and the accumulation of medicinal components. The results showed that CP fumigation significantly increased the content of total nitrogen, alkali-hydrolyzable nitrogen, ammonium nitrogen, nitrate nitrogen, and available phosphorus in the soil, but it had no significant effect on potassium content. The soil protease activity showed a trend of first increasing and then decreasing with the prolonging of the treatment time. Both the soil urease and acid phosphatase activities showed a trend of first decreasing and then increasing with the prolonging of the treatment time. The higher the CP treatment concentration was, the lower the urease and acid phosphatase activities would be in the soil. The protease activity was relatively high after CP40 treatment, which was better than CP30 and CP50 treatments in promoting the nitrogen-phosphorus-potassium accumulation in P. notoginseng. The seedling survival rates after CP0, CP30, CP40, and CP50 tratments in October were 0, 65.56%, 89.44%, and 83.33%, respectively. Compared with the CP30 and CP50 treatments, CP40 treatment significantly facilitated the growth and development of P. notoginseng, the increase in fresh and dry weights, and the accumulation of root saponins. In summary, CP40 treatment accelerates the increase in soil nitrogen and phosphorus nutrients and their accumulation in P. notoginseng, elevates the seedling survival rate of P. notoginseng, enhances the growth and development of P. notoginseng, and promotes the accumulation of medicinal components. CP40 treatment is therefore recommended in production.
三七连作障碍严重，且缺乏有效的防治措施。用氯化苦（CP）进行土壤消毒已被证明对减轻其他作物的连作障碍有效。为了确定CP在三七连作中的作用，本文探讨了不同处理浓度（0、30、40、50千克/亩，1亩≈667平方米）的CP对土壤大量元素养分、土壤酶活性、三七生长发育以及药用成分积累的影响。结果表明，CP熏蒸显著提高了土壤中全氮、碱解氮、铵态氮、硝态氮和有效磷的含量，但对钾含量无显著影响。土壤蛋白酶活性随处理时间延长呈先升高后降低的趋势。土壤脲酶和酸性磷酸酶活性均随处理时间延长呈先降低后升高的趋势。CP处理浓度越高，土壤中脲酶和酸性磷酸酶活性越低。CP40处理后蛋白酶活性相对较高，在促进三七氮磷钾积累方面优于CP30和CP50处理。10月份CP0、CP30、CP40和CP50处理后的幼苗成活率分别为0、65.56%、89.44%和83.33%。与CP30和CP50处理相比，CP40处理显著促进了三七的生长发育、鲜重和干重增加以及根皂苷积累。综上所述，CP40处理加速了土壤氮磷养分的增加及其在三七中的积累，提高了三七的幼苗成活率，增强了三七的生长发育，促进了药用成分的积累。因此，生产中推荐采用CP40处理。
