After the fruit trees are defoliated, most of the fruit growers will clean the leaves outside the park and burn them. The purpose is to reduce the occurrence of pests and diseases in the following year. However, defoliation is rich in nutrients, which in turn causes a waste of resources. The rational use of deciduous trees to return parks can not only improve the soil, increase the soil moisture content and fertility, but also eliminate the pathogenic bacteria and pests that have passed through the leaves in winter and reduce the amount of chemical fertilizers and pesticides. Its operation method is: 1. Collect fallen leaves. After the fruit trees are defoliated, the fallen leaves are collected together with the weeds in the garden, and are piled together. 2, brewing fermentation. Before retanning, the leaves are first sprayed with 40% Dimethoate EC 800 times or 80% Dichlorvos 400-500 times or 20% Fenvalerate EC 500-600 times. After spraying, mix thoroughly and compost for 5-7 days to kill the hidden eggs. Then, the deciduous and farmyard fertilizers are concentrated and fermented in a ratio of 1:1, and the outer cover film is heat-insulated and waterproofed to fully decompose. If a small amount of superphosphate is added during tanning, the effect is better and the fertilizer efficiency is higher. 3, science park. Combine the orchard with ploughing soil and fertilize the mixed fertilizer of deciduous and farmyard manure to perform radial furrows or annular furrows with a depth of about 60 cm. According to the experiment, deeper application than shallow application is effective without cutting the roots of fruit trees. 4, timely irrigation. After the defoliation is returned to the garden, in case of dry weather, sufficient water shall be poured around the tree trays and covered with straw to protect the trees. Processed Frozen Tuna,High Grade Tuna,Bigeye Tuna Can,Tuna Chunk in Oil Can Zhejiang ocean family co.,ltd , https://www.ocean-family.com