Effects Of Planting Cover Crops On Konjac Growth,Soil Physiochemical Properties And Microbial Structure In Konjac And Corn Intercropping Field

Konjac is a crop with high economic value.Konjac is mainly grown in Qinba,Yungui and other regions in China.It is the planting characteristic of this region.Planting konjac can increase the income of farmers in mountain areas,thereby driving people out of poverty and getting rich.Due to the lack of good varieties and low planting levels,the konjac disease is serious and the yield is low,so the benefits are not ideal.This paper takes the base of Ankang Academy of Agricultural Sciences in Shaanxi Province as the test site,and adopts the intercropping of different crops under corn intercropping to study the effects of photosynthesis,growth,yield,and soil physicochemical on Konjac plants.The effect of the planting mode on the number of soil microorganisms,with a view to forming a set of konjac green disease-proof and efficient cultivation technology system to increase the yield of konjac.The main findings are as follows:1.The overall p H value of the konjac-maize soil under different cover crops is not significantly different.This shows that different planting modes have no significant effect on soil p H changes;the surface moisture content of konjac soil changes greatly,the previous crops are taro seeds,and the highest soil moisture content is 35.03% in the planting mode without intercropping crops,the previous crops The crop is ryegrass and the intercropping crop is mung bean.The soil moisture absorption is the lowest at 19.09%.Taken together,there is no obvious rule for plants to absorb and consume soil nutrients between treatments.2.The chlorophyll SPAD value of konjac-maize intercropping under different cover crops is different between treatments.Among them,the highest chlorophyll content of konjac leaves is the previous crops without planting of taro seeds,the konjac leaves nitrogen The element content is only lower than that of the previous crops,which is ryegrass without intercropping,which shows that the planting mode is beneficial to the photosynthesis of konjac plants to a certain extent.3.The growth indexes of konjac-maize intercropping konjac-maize intercropping under different cover crops are larger than the single konjac species.Taken together,the planting model of konjac planted with ryegrass intercropped with mung bean as the previous crop under corn intercropping is better than other treatments.4.The quality and yield of konjac-maize intercropping under different cover crops are significantly higher than that of konjac single species,in which the total weight of konjac is the highest under the treatment mode of taro buckwheat intercropped with taro.This shows that under this planting mode,the yield of konjac has been increased to a certain extent.5.The number of soil microorganisms in konjac-maize intercropping under different cover crops is significantly higher than that in konjac monoculture.Among them,the first crop was the tallow buckwheat interplanted with alfalfa,and the highest number of fungi was in the soil;the previous crop was the ryegrass intercropped with purslane,and the top crop was the highest.The number of nematodes is the highest.