Before the winter, weed seedlings are small and have poor drug resistance. This is due to the fact that weeds in wheat fields have 2 peaks of weeding, and the amount of unearthed weeds before wedging accounts for more than 80% of the total amount of weeds. Therefore, the traditional spring medication habits are changed, and pre-winter removal is the most effective way to control weeds in wheat fields. Best practice.
I. Rape field addition
1. Chemical extermination before planting. 3 to 5 days before transplanting rapeseed, mu with 20% paraquat 200ml, watering 50 kg spray to eliminate weeds on the ground.
2, stem and leaf treatment
(1) Fields dominated by grasses and weeds: 50-70 ml per mu with 5% high efficiency or 80-100 ml with 5% odds.
(2) Broad-leaf grass-based plots: Mu with 30% more solid 45-50 ml or 17.5% oil handsome 90-120 ml.
The above formula watered more than 25 kilograms and sprayed on the weeds at the 3-5 leaf stage when the temperature was higher than 10°C.
Second, remove wheat
1, to see the aphids, wild oats and other grass-based weeds in the field, after the seedlings before sowing with 20% steadily (ethidium) 150-200 g or 50% isoproturin 125-200 g or 50 % acetochlor (extract seedless wheat or field water should not be used) 70 ml EC, water 50 kg spray. Weed 3-5-leaf period, with 10% of new mussels per acre or 7.5% of deterrence microemulsion 50-80 ml or 6.9% of 50-60 ml of 6.9% hummer microemulsion watered 50 kg, evenly sprayed.
2. In broad-leaved grass-based plots, after the 3 leaves of the wheat seedlings, the weeds before the 4 leaf stage use 10% Benzaxanthrene 10-20 grams or 40% Pentium 5 grams or 50% Ma Zhuang 50-70 grams. Or +20% to get rid of 20 ml of water spray 25 kg.
3, single and double cotyledon weeds mixed fields, acres with 50% cumene wettable powder 120-180 grams and other 50 kg evenly sprayed.
Third, pay attention to matters
1. Adhere to three conditions for the safe and efficient use of herbicides: high soil moisture, small grass age, and sufficient dose.
2. It is forbidden to use herbicides containing amine benzoxilon in rape fields.
3, when dispensing, must use 2 dilution method, it is strictly prohibited to use the medicine directly into the spray.
4, choose sunny and windless weather, the temperature is about 10 °C, the best effect of spraying, less than 6 °C do not use drugs.
5, after the application of pesticides should be promptly and thoroughly cleaned, so as not to cause injury to other crops.
temperature warning sensor
Temperature Sensor,Rtd Sensor,Temp Sensor,Infrared Temperature Sensor
Zhejiang Hisern Medical Device Co., Ltd , https://www.hisernmedical.com