Study on the spatiotemporal distribution pattern and quantity monitoring model of cotton aphid population on cotton
In order to accurately obtain the occurrence of cotton aphids,this experiment investigated the number of cotton aphids in different parts of the cotton plant.A linear regression model(SLR)was constructed using the number of cotton aphids in different parts and the number of cotton aphids per plant or per hundred plants to achieve rapid monitoring and prediction of cotton aphid occurrence.The results showed that cotton aphids showed a trend of first increasing and then decreasing over time,with most of them distributed on the upper leaves and stems,and fewer in the middle.In the model of the number of cotton aphids per plant,the model based on upper stem(S1)and lower leaf(L3)variables has the best effect.In the single plant cotton aphid quantity model,the model based on the variables of upper stem(S1)and lower leaf(L3)has the best performance;In the constructed model for the number of 100 cotton aphids,the model based on the variables of middle stem(S2),upper leaf(L1),and lower stem(S1)showed the best performance.The accuracy of the single plant cotton aphid quantity model is higher,and the accuracy of predicting the single plant cotton aphid quantity and the hundred plant cotton aphid quantity in different parts of'Xinluzhong 81'is better,which can be well used to predict the cotton aphid quantity.
万方数据
维普
