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Comprehensive transformation of citrus orchards in the low-yielding technology


7, No. 1 root pruning also to some extent inhibited the germination of summer shoot. Slow shoot fruit contradiction. 0 ~ 20o'n soil after soil improvement compared with fibrous roots before soil improvement to increase 19.4% ,20 - 40an soil increased 231.2%, 40 ~ 60 ∞ 1066.3% increase in soil to cultivate a strong root group. Soil improvement after the change in soil nutrient content, especially nitrogen, total phosphorus, available nitrogen, phosphorus, potassium, organic matter and improving soil available Zn content than before the increase. Citrus yield and quality to provide a good soil environment. 2 before the project to improve fertilization. Orchards with less organic fertilizer, chemical fertilizers with the main tour, and the NPK ratio is irrational. After the application of organic fertilizer project. Soil conditions according to the farm by potassium, the results show that, in the main root zone within 20 to 40, 16.9% increase in soil organic matter content. Nitrogen, phosphorus and potassium significantly increased the total accordingly. That the foot of nitrogen, phosphorus and potassium in proportion to the 1:0.7.1 more reasonable. 3 two-round spring and summer pruning to promote implementation of the project changed after the winter pruning twice a year pruning. The end of June to July on the Austin Xia Jian, the main spur off the flowers and fruit branches and decay due to open branches l Well can nurture a large number of quality result mother. Received after the winter pruning fruit diseases and insect pests mainly cut off branches, dead branches, overlapping technologies. Pruning the top of retraction pressure. To summer, winter and spring pruning twice, the average number of fruits per plant increased 33.7%, production increased 61.4%, and the crown bore Choushao fruiting more. Three-dimensional results. 4 promotion of integrated technology protecting flowers and fruits mainly based on the actual situation in my field to take Liquid Fertilizer Spraying and wiping spring shoots protecting flowers and fruits and other technical measures. 4l Liquid Fertilizer Spraying protecting flowers and fruits in the citrus flower bud to thank with 0.3% or 0.5% of urea fertilizer imports. 3 to 5 times spout fertilizer, pre-spraying of urea-based,[link widoczny dla zalogowanych], mid-and late spraying fertilizer to speed up the aging of spring shoots. Flower and fruit drop reduction, the effect is very significant. Vigorously wipe the spring shoots of 42 different varieties and tree vigor according to wipe the tip of different measures. For the early Satsuma, if the amount of normal flowers (per plant flowers l ∞ 0 朵 above), old leaves fewer plants tree vigor is weak, then erase all retention pins Students spring shoots), and to part of the spring tree thinning, hand tip should not be too heavy, so as not to result in tree vigor decline; to the flowers are few who can wipe all trace of spring nitrate. For the small amount of late-maturing satsuma mandarin flower ( plant flowers 2OO ~ 1CX) O Duo), especially when there were more leaves and flowers, spring shoots nutritional edge for a long time, should try to erase the spring and take along, if a wipe finish. later supplemented wipe. either in early or late species. If the flower less. with 3 to 4 leaves on the leaves and flowers can be taken to destroy a Leaf way stopped or is about to pluck leaves half a sheet of rub leaves; on long 20Qm result mother on top of the nozzle with leaves and flowers, retaining 4 - 6 flowers. the top of the stub. wipe inappropriate to the period of spring shoots, premature likely to cause late spring shoots, increasing the number of wiping tip. too late effect of protecting flowers and fruits are poor, should have changes in the bud to early flower from before. Practice has proved that wiping effect of protecting flowers and fruits of spring shoots significantly, particularly after the bumper year of small year. always take along more than the spring. have leaves and flowers of more vigorous vegetative growth,[link widoczny dla zalogowanych], wiping spring shoots Paul flowers and fruits results are quite remarkable. It is a team of investigators in 1990, average yield wiping tip tree 2I) does not wipe shoot only 3.5. 5 promotion of integrated pest and disease to develop the first comprehensive platform of realistic combat experience. be reasonable medication, appropriate use of medication and alternative pesticides, to improve the control effect. to reduce production costs. such as the citrus red mite, rust ticks and so on. use Nisuo Lang,[link widoczny dla zalogowanych], of mites net,[link widoczny dla zalogowanych], triazole tin, alternating rotation of pesticides propargite PL use, use 1 ~ 2 year miticide, ie before the peak in the mites in late April to early May and June to September main control 1 or 2 times during the spray. sulfur station agent stone used in winter, oil emulsion, etc. control, to reduce the rotation of winter base class of Kuwana Chlorpyrifos use,[link widoczny dla zalogowanych], built slaughtered quinalphos so immature in every generation hatched Sheng Kuwana, especially the first generation of immature Kuwana of control. IPM black fruit than the control area, to reduce 24.1%. Kuwana possession of less harmful fruit 4.9%, 27.6% increase in qualified fruit, greatly improved the fruit quality and commodity rates. 6 on, J, leaves of satsuma mandarin to my field grafting 7 year-old satsuma mandarin 9451 leaflets were 9.5hm:. production yields are in the 300kg less since February 1990 early grafting temperature, H mandarin, bud survival rate of 94.6%. then shoot out the average per plant up to 122, Crown is 1.51m × 1.60 ‰ 1992 team of investigators at 1O. the results of 240 per plant, 30 strains producing fruits of uniform size selection. 3 years after grafting that into a highly productive and stable good performance.
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