1. Single-season live field weeding and pest control technology
Grass damage is the biggest hazard of direct seeding rice. Grasping chemical weeding is a key measure to capture the harvest of direct seed rice. 40% benzyl propyl ketone, 50% benzyl acesulfame, 53% benzoyl benzyl benzyl have good effect in controlling weeds in live field, and this is still the main species of weeding in our county. In addition, the occurrence area of ​​stripe leaf blight in our county has been expanding year by year, and it is essential to control the control of the poisonous insects, such as the stalking field, the live field and the field. Therefore, the following is the specification for the chemical weeding and treatment of disease in the single-season rice field in 2008:
(1) Weeding before tillage : 7-10 days before tillage, use 41% glyphosate 150 ml per acre or 10% glyphosate 1000 ml per acre and 30 kg of fine spray to prevent the old grass before sowing.
(2) Weeding after sowing: The live seeding field adopts the "sealing and killing" secondary application method: the first time is "sealing", after 2-4 days of germination sowing (秧苗立针), 40% benzyl propyl acetonide can be used. Wet powder (live net, Leji live green) spray 60 kg per acre of 60 g, or 3-6 days after germination sowing (with seedlings) with 50% benzyl? Wo wet powder (Wu Kuo net) per mu 130-150 grams of flushing 45 kg spray. The second time is "killing", in the second leaf of the seedlings - heart to the three-leaf stage, combined with the application of "weaning fertilizer" with 53% benzoyl benzyl WP (double super, agricultural cattle) 60 grams per mu mixed with urea or Fine soil is applied, water is 3-5 cm when applied, and water is kept for 5-7 days.
If there are still more gold in the 5-7 leaf stage of rice, you can use 10% oxazolyl grass? Cyanide fluoride emulsifiable concentrate (100 division) to prevent it. Rice 5 leaves per acre with 20 ml, flushing 30 kg evenly spray, after each additional leaf, increase the amount of 5 ml, but the maximum should not exceed 30 ml. Before the application, drain the field water and keep it moist. After applying the medicine, water is 3-5 cm every 1-2 days, and the water is kept for 5-7 days.
(three) pest control
1. Dressing with pesticides, replacing carbofuran to repel sparrow mice, and controlling rice husks: the rice seeds after soaking and germination are added to the dressing agent 35% butyl thiocarbamate (rice mix) at a ratio of 5 grams of powder per kilogram of seeds. Cheng, good An Wei), and turn the seed dressing back and forth, so that the agent evenly attached to the surface of the seed, with the mix and broadcast.
2, treatment of phlegm and disease prevention: in the second leaf of the seedlings to the three-leaf stage with 10% imidacloprid WP (thumb, Bidan) 40 g / acre 30 kg spray, to control the gray planthopper.
(four) matters needing attention
1, the seed must be germinated sowing, germination to bud long half grain is appropriate. When seed dressing, the buds should be moist, the action should be light, and the storage time should not be too long after the seeds are mixed.
2, the field should be intensively cultivated, the noodles should be leveled, the seesaw should be used for the current broadcast, and the ditch should be planted to facilitate drainage.
3. After weaving, the amount of weeding should be sufficient, the amount of water should be sufficient, the spraying should be uniform, and it should not be re-sprayed or leaked. Keep the clams wet when applying or after application, avoid cracking caused by drying, and timely irrigation in the second leaf. On the raft, water control grass.
4, 10% benzoxazole grass? Cyanide fluoride emulsifiable concentrate (100 liters) must be used in the 5-7 leaf stage of rice, no repeated spraying, no increase in dosage; after spraying, some yellow spots or white spots may appear in rice leaves. But rice can be recovered after 7-10 days.
Second, transplanting Daejeon chemical weeding technology
After 5-7 days of transplanting, the rice was lived, and 25% benzylidene b WP (transplanted once, net turf) 20 g/mu was mixed with urea and water was applied for 4-5 days.
SHAANXI HAIBO BIOTECHNOLOGY CO., LTD , https://www.rozenbio.com