Recently, the author went to Liyuan, the original seed brigade employee of Shen Dong Farm, Jidong Farm, Hanchuan City, Hubei Province, and asked him how the income of the pear farm was throughout the year. He said that his 2.5 acres of pear orchards, 140 trees with pear trees, the age of more than 20 years, each pear tree produces an average of 100 pounds, an average price of 1 yuan per catty, a flat income of 100 yuan, the total income of the park More than 14,000 yuan, less than 4,000 yuan in 2011. When asked why the income is reduced, he said that it may be affected by the dead branches of pear trees, but I do not know why it is dead. When the author inspected the fields, he said that because the old branches had dug up five old pear trees in the previous year, there are still some pear trees with varying degrees of dead branches. I wonder if they are digging or keeping them updated? We look at the situation and discuss the reasons. According to our previous experience in a number of pear gardens, the old pear orchard has had this kind of dry shoots almost every year. The main reasons are the following: First, the soil lacks calcium, In the pear tree that lacks calcium, the growth of the young roots is impeded, and the root tips are first bent and finally die. The pears that are severely deprived of calcium, part or most of the shoots, and dead branches. Although Shen Jinbing also applied phosphate fertilizer, the content of phosphorus pentoxide in the selected phosphate fertilizer was relatively low, and the application time was only in spring, ignoring the effect of winter basal fertilizer; secondly, the soil content of pear orchard was heavy. The content of boron is less, and when the boron is deficient, the bark is easy to fester, and there are also different degrees of desiccation. Third, the potassium deficiency can also cause the scorch of the pear leaves and inhibit the development of the branches. He chose the Potassium chloride is used as top dressing, and the application amount is also insufficient, and the application time is also late. Fourth, the soil is relatively compacted, there is no winter deep-turning soil and winter lingering for 5 years, and the compacted soil, coupled with the old pear tree, does not have very strong root development. After fertilization, the utilization rate of fertilizers is also low. Fifth, there are no deep trenches around the pear orchards. When heavy rain falls more than 100 mm on the day, it is vulnerable to waterlogging, which makes the roots lack development in a transparent environment. Similar to Shen Jinbing’s pear trees, the old pear gardens have taken place in varying degrees. After discussion with Shen Jinbing, in order to promote multiple new root systems, the following countermeasures have been adopted to improve the environment and improve Fertilizer structure, improve drainage facilities, update pear trees, and rejuvenate. The first is to use winter and spring leisure time to recuperate the drainage ditch around the pear orchard, so that 100 mm of heavy rain will not be harmed by water, so that the root system can normally absorb the supply of fertilizer and water; the second is to deepen the consolidation of the gap between pear trees. Due to the large canopy, the soil is not suitable for mechanical tillage. It was decided to use artificial deep-turning soil, with a depth of 60 to 70 cm. The third is to use base fertilizer, especially organic fertilizer, in conjunction with deep-turning soil. His family has prepared rotten pigs. Dung 8000 pounds. Generally, high-yielding pear trees need a ratio of 1:0.5 to 1 for nitrogen, phosphorus, and potassium fertilizers. It is necessary to ensure that phosphorus phosphates should be selected from phosphorus phosphates with an effective content of phosphorus pentoxide ranging from 16% to 18%, preferably organic. Fertilizer application. Potassium fertilizer with an effective content of potassium oxide of 60% is selected, and a boron fertilizer with a boron content of 15% to 20% is effectively applied, and the boron fertilizer is not less than 2 pounds per acre. The time is completed before the end of spring, and should not be postponed; Fertilizer can not be too close to the trunk of the pear tree, at least to maintain a distance of 1 meter or more; Fifth, we must promptly apply herbicides to kill weeds in early spring, to reduce the conflict with the roots to compete for water and improve the symbiotic relationship. Seasoned Jellyfish Slice,Special Flavour Clam,Seasoned Scallop Meat,Ika Sansai Squid Salad DALIAN HAIBAO FOODS CO., LTD. , https://www.haibaoseafoods.com