A kind of control method of notoginseng root rot
A root rot and Panax notoginseng technology, which is applied in the field of prevention and treatment of Panax notoginseng root rot, can solve the problems of environmental safety hazards in production areas, increase the dosage of pesticides, and aggravate pesticide residues, so as to increase production, increase economic benefits and ecological protection. Environmental benefits, colonization-promoting effects
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Embodiment 1
[0033] In January 2018, red soil widely distributed in the field was selected as the soil for planting Panax notoginseng at Daheqiao Farm, Xundian, Yunnan Agricultural University, Xundian County, Yunnan Province. Through sampling and analysis, it was confirmed that the planting soil sample was acidic soil (pH=5.092 O5≥20.0%, K 2 O≥20.0%), once a month.
[0034]Compared with the treatment without biochar, adding 500kg of straw biochar per mu has a significant improvement on the physical and chemical properties of acidic soil (see Table 1): after adding straw biochar, soil pH, electrical conductivity, organic matter content and alkaline hydrolysis The contents of nitrogen, available phosphorus and available potassium all increased significantly. In addition, the incidence of Panax notoginseng root rot decreased from 49.00% to 36.56% in the year when biochar was added, and the disease index decreased from 17.44 to 8.30. The results showed that adding 500kg of alkaline straw bio...
Embodiment 2
[0038] In January 2018, in the Daheqiao Farm, Xundian County, Yunnan Agricultural University, Xundian County, Yunnan Province, uncultivated wasteland soil was selected as the soil for planting Panax notoginseng. Through sampling analysis, it was confirmed that the planting soil sample was neutral soil (6.52 O 5 ≥20.0%, K 2 O≥20.0%), once a month.
[0039] Compared with the treatment without biochar, adding 500kg of bamboo charcoal per mu had little effect on the pH of neutral soil, but significantly improved soil conductivity, organic matter content, and soil alkali-hydrolyzed nitrogen, available phosphorus and available potassium content, effectively increasing soil nutrients (see Table 2). And after adding bamboo charcoal, the incidence of Panax notoginseng root rot decreased from 56.64% to 45.29%, the disease index decreased from 22.03 to 18.35, the survival rate of Panax notoginseng increased from 64.68% to 73.47%; the average root dry weight of Panax notoginseng decreas...
Embodiment 3
[0043] In January 2018, a biochar addition experiment was carried out at Daheqiao Farm, Xundian, Yunnan Agricultural University, Xundian County, Yunnan Province. Through sampling and analysis, it was confirmed that the planting soil sample was alkaline soil (pH=7.67>7.5). The acidic charcoal purchased from Yunnan Weixin Agricultural Technology Co., Ltd. was fully mixed with the soil at a dosage of 500kg / mu, so that the soil moisture content was kept at 20%. After 1 week of idleness, it was conventionally planted with a spacing of 5cm*5cm. Thirty-seven. The field water and fertilizer management adopts the integrated irrigation and fertilization method to keep the soil water content in the field between 25% and 35%; after the emergence of seedlings reaches more than 70%, 3kg of water-soluble fertilizer (N≥20.0%) is sprayed per mu in combination with sprinkler irrigation. , P 2 O 5 ≥20.0%, K 2 O≥20.0%), once a month.
[0044] Compared with the treatment without biochar, addi...
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