The management points of the Orange Garden in winter focus on the following aspects: 1. Remove the winter shoots. As the temperature drops, the citrus fruit trees gradually enter a relatively dormant period, and the relatively high temperature of the southern subtropical citrus production areas, young citrus Orange trees will produce sporadic winter shoots. The winter shoots are not easy to grow old and have no use value. They should be wiped out in time to avoid consumption of nutrients and are not conducive to the accumulation of nutrients. 2, timely harvest, reasonable storage (1) timely harvest: December varieties of late-maturing citrus fruit has matured into the harvest period, this time should be mature and fruit color, size, weight, soluble solid Indices such as objects and so on can be harvested in batches in batches. Huang Liuqing can be harvested first and then harvested in 2-3 batches. The harvest is classified and harvested. Each tree is harvested in three stages: large, medium, and small, and batched in batches according to the quantity listed. Harvesting, such as fruit for storage, can be harvested when the fruit is 7-8 mature, fresh food is harvested when 8-9 mature. (2) Reasonable storage: The picking must be done after sunny dew, and in order to avoid fruit trauma, the “one-fruit-two-cut†method should be used to pick fruit, that is, first cut 1-2 cm away from the fruit pedicle, and then fruit Pei cut flat, light cut, gently. After harvesting, the wounds, diseases, and worms were selected, and bins were sorted and sold according to size. Storage fruit, should be immediately after the drug treatment, dry and filtered liquid in the shade, pre-storage perspiration with a single film packaging, and then storage. 3, fertilizer and water management Appropriate application of fruit fertilizer: Late-maturing varieties should be applied before harvesting a fruit fertilizer, to facilitate the restoration of tree vigor and flower bud differentiation. After the fruit is harvested, 0.3% urea plus 0.3% potassium dihydrogen phosphate shall be sprayed for extra-root dressing, and a single irrigation shall be performed to restore the tree vigor and protect the leaves for the winter. Improve cold resistance. The Da Nian tree, the old and the weak trees should be properly applied with the hydrogen fertilizer, and the young tree should be increased with the application of phosphorus and potash fertilizers, combined with the deep-rolling green and the soil. Before harvesting fruit, water should be controlled to facilitate fruit storage and promote flower bud differentiation. However, in arid regions in winter, it is necessary to pay attention to appropriate irrigation, to facilitate the growth of roots, to restore the tree vigor and reduce the winter deciduous; appropriate irrigation in low-temperature areas to improve the ability of plants to resist cold. 4. Prune the clear garden after harvesting and clean the garden, pruning branches, dead branches, cross branches and overlapping branches. In order to reduce overwintering diseases and pests, the pruned branches and branches and litter must be burned. The pruning should be carried out according to the growth characteristics of citrus. The strong branches of the top should be removed from the base of the big branches by means of “open skylightsâ€. The shades and overlapped branches inside the canopy should be thinned to cut off the sunlight between the rows and the crown. The branches are retracted to maintain the air and light in the tree body and orchard. 5, prevention and control of plant diseases and insect pests after harvesting fruit tree basically recovered, spraying pesticides must be timely prevention and treatment of winter diseases, spraying should pay attention to the whole tree spray uniform, comprehensive, thorough; inside and outside the crown, trunk, main branch, backbone branches, all levels of branching, It must be sprayed in place. Only in this way can the adults, larvae, and eggs that inhabit wintering habitat be eliminated. The agents used were 0.8-1 Baume Degree Lithosulfurizer, 10-15-fold Pineine Mixture and 99% enemy-dead engine oil emulsion 150 times, and 40% speed-eliminated EC 800-1000 times. 6, deep turning to improve soil, soil covering mulberry orange orchard in winter to the whole park deep turning to change the soil, should be carried out before the frost, the depth of about 30 cm is appropriate, shallow within the canopy drip line, outside the dripping line is deep. Most of the orchards in South China are acidic red-yellow loams with a pH of 5-6.5. They combine lime with lime (100 kg of lime per acre) to neutralize the soil acidity of the slopes. Secondly, lime can eliminate overwintering pests and diseases. effect. After tumbling, the tree tray should be set up in the rhizosphere; cultivate soil 10 cm and cover rice straw, straw, hay, etc. to protect the root system and enhance the ability to resist cold and winter. China Agricultural Network Editor
Our benzene compounds and Heterocyclic Compounds are developing at the same time, currently we have more than 800 kinds of benzene compounds. Species is on constantly improving . We also developed a distinctive feature of our company 's products , such as 2 -nitro-3 -nitro-5 -bromoacetophenone 56759-31-0, 2- chloroacetophenone , 3-Bromo-2-iodotoluene CAS 869500-07-2, α- bromo-3- fluoro-4- chloroacetophenone , 231297-62-4 . we are willing to accept customized products and services outside of our catalog . We are ready to overcome the complex chemical synthesis, we have the confidence and ability to accept difficult challenges . Our high -quality , cost-effective services have been widely recognized by our customers. We are always put the customer's needs and interests on first , and strive to establish a sustainable and stable relationships with customers.
we will give you:
1. Best quality in your requirement
2. Competitive price in China market
3. Mature Technical support
4. Professional logistic support
All we want is win-win business. Send yr. inquiries, you will get it!
Benzene Series
2,3,4-Trifluoronitrobenzene,High Quality Fluoro,Benzene Series
Taizhou Volsen Chemical Co., Ltd. , http://www.volsenchem.com