1, varieties. The varieties are not on the road, and the area of ​​weak winter varieties has increased. In recent years, with the appearance of warm winter temperatures, weak winter varieties are increasingly used by farmers because of their high yields. However, due to its poor cold resistance and weak resistance, it is difficult to adapt to abrupt cooling, resulting in a lot of dry leaves and even death.
2. Climate impact. The amount of accumulated temperature above 0°C after sowing is the most direct climatic factor that influences the growth and development of wheat before winter, and the accumulated temperature before wheat is 485-650°C. Above 650°C, wheat seedlings will appear prosperous, with large leaf ages, high plant heights, premature ridge closures, decreased sugar reserves within the individual, reduced cold resistance, and are prone to frost damage.
3, cultivation measures. One is the quality of soil preparation. At present, the deep-seedling and tillage techniques of wheat in our county have not yet been fully popularized. Most of the farmers are mainly adopting rotary-tilling and soil preparation. The deepest scale is about 20 centimeters or even less, which is not conducive to the lowering of the root system of wheat. The second is the promotion of straw returning technology. The soil layer is not practical. Third, the reduction in the amount of organic fertilizers, and the appearance of deferred and yellowed wheat fields, are not conducive to frost resistance. Fourth, there is no repression after sowing. The fifth reason is that because of looting and sowing seeds, there is no water in the head after sowing, and the seeds are not in direct contact with the soil. Fifth, do not spray antifreeze water according to production needs. Sixth, the grazing in wheat fields is serious.
Disclaimer: Some articles in this website have been transferred from the Internet. If you are involved in third party legal rights, please inform this website. phone
Ice Hair Removal,Ice Laser Hair Removal,Ice Therapy Hair Removal,Ice Cold Ipl Hair Removal
Shenzhen Jie Zhong Lian Investment Co., Ltd. , https://www.szmeizon.com