The judgment method of Drug damage caused by growing Rice
At present, in the process of using pesticides, most people will use compound pesticides in order to increase the effect. However, if used, it is easy to cause drug damage. How to judge whether it belongs to drug damage through investigation and analysis, the following methods are introduced:
The main results are as follows: 1. Judging from the period and amount of pesticide application, if the time of applying pesticide to control diseases and insect pests is 1-2 days after rice planting (throwing), it is more sensitive and prone to drug damage. High dose application of individual pesticide products is also prone to drug damage.
2. Check the condition of fertilizer, water and soil: if the irrigation is too deep (immersion growth point) after medicine, it is easy to cause drug damage. Check whether improper fertilization or application of immature organic fertilizer, or improper retting of straw green manure caused poor plant growth symptoms.
3. Check the situation of diseases and insect pests: the rice plants damaged by rice tube thrips and rice root leaf beetles will become short and clustered, the leaf tips will turn into tubular curls and become withered and yellow, and the whisker roots are short. The main symptoms of rice common dwarf disease are yellow and withered leaves, dwarf plants, fade from the top leaf tip and appear broken patches, but the leaf veins remain green, and the leaves often show obvious yellow-green stripes. These conditions should be distinguished from drug damage.
4. look at the growth of grain seedlings before and after application: if the abnormal symptoms occur after pesticide application, and the seedlings of other fields with the same quality and the same variety grow normally, this may be drug damage.
- Prev
Management of transplanting Rice seedlings by Machine
1. Field ploughing requirements 1) Field ploughing: the depth of rotary ploughing is 10 cm to 15 cm, and the depth of ploughing is 15 cm to 20 cm. 2) leveling of the field: the difference between the height of the ground surface within the range of each field is less than 3 cm. There are no weeds, sundries, shallow stubble and other residues on the surface of the field.
- Next
Seed Soaking and Germination Method for Hybrid Rice
It is now the spring production season, a small number of farmers in the process of seed soaking germination, due to improper operation caused by seed sour smell, bad budding and other problems. Therefore, attention should be paid when soaking seeds: 1. Sunning seeds: Sunning seeds for 3 - 4 hours a week before soaking seeds
Related
- A course of planting techniques and methods on how to grow carrots
- How to plant the latest tulips?
- Is it better to pick tea in the morning or in the afternoon? When is the best time for tea to be picked? what is the third or fifth tea?
- Launch Yuanxiao Happy combination Haocha + Tea Yuan healthy Taste
- Penghu Tourism "Fireworks 20 Parade with You"
- 2022 West Lake Happiness holds "Digital Revitalization Voucher" and draws iphone13 and laptop.
- Banqiao Fuzhou social houses are designed to change start-up combined with police elimination to create a safe and livable environment
- The convenient measure of "mechanical weeding" in Xinbei has been abused and the Agriculture Bureau has imposed heavy penalties on the illegal land consolidation.
- Changgeng University Joins Hands with Four Memory Factories to Rescue Memory Talent Shortage
- The list of Taiwan's top 100 MVP managers is listed by the Director-General of the Farmers' Association of Sanxia District.