Winter and dry wheat problems, multi-technology, timely response

In this province, rice stalks were planted earlier this year. Although there were two province-wide rainfalls after sowing, most rice cultivars and dryland wheat suffered from high temperature and low rainfall during the germination stage after sowing, and the overall quality of emergence was poor. Obviously less than the same period last year.

The recent sunny weather is obviously not conducive to Xiaochun production. What problems exist in the wheat production in our province? How to solve them? December 13, reporters interviewed Dr. Tang Yonglu wheat cultivation expert Provincial Academy of Agricultural Sciences.

Current problem: Miao Shaomiao weak grass insects

According to Tang Yonglu, since most of the Sichuan Basin has been dry and rainless since the beginning of November , soil moisture is generally poor, especially in the middle of the basin, including the three stations in the central and western regions, Zhongjiang, Jintang and Jianyang. The dryland wheat drought is the most serious, and some land plots are wheat. Has been wilting, and even dead seedlings. The soil moisture content of the tillage wheat field in the past is generally good, but the surface layer is relatively dry. The results of field survey data of 8 counties (districts) show that whether the dryland is intercropped with wheat or rice bran, the basic seedlings are generally small, and the differences between the plots are very large and extremely unbalanced. In addition, since the planting this year, the temperature is higher than normal, the rainfall is less, the length of the wheat seedlings is not long, the leaves are slender and the tillers are few.

Experts learned through field investigations that the disease has not yet occurred in large areas, but in some areas, pests in the field are more serious. Mainly in the feeding of the roots and stems of seedlings, leading to seedlings and dead seedlings. In the rice buckwheat area, although chemical weeding before sowing was generally adopted, there were also many plots of weeds that began to recur and the grass damage was heavier.

Coping method: drought resistance, fertilizer removal, chemical control

"A lot of dryland wheat fields in the shallow hills of Chuanzhong are not enough for their own seedlings. Now they are facing a serious drought threat. The most urgent task is to fight drought and protect the seedlings." Tang Yonglu stressed that technical measures should be kept up to date and every effort should be made. If there are canal and water source conditions, pumping and watering, and lack of irrigation conditions, watering should be taken. In the plain rice buckwheat area, the basic seedlings are also less than normal, and irrigation can be carried out in advance to promote tillering to make up for the shortage of basic seedlings.

In addition, due to the lack of basic seedlings and the drought, Tang Yonglu reminded that it is necessary to topdress as soon as possible. "Conditions of wheat following rice, irrigation can first, after the infiltration of water until substantially no clear water, urea applicator. Dressing should be based on the amount of base fertilizer situation. According to the survey, the amount of nitrogen fertilizer generally 5 to 7 kg Left and right, this seedling can apply about 5 kg of urea per mu. If there is no irrigation, it is best to apply the fertilizer to the manure water. For the dry land wheat in the hilly area, the base fertilizer is used less than the plain rice buckwheat, generally only 4 ~ 5 kg or so, there is a habit of applying topdressing early. You can apply 6 to 8 kg of urea per acre . Note that topdressing must be combined with irrigation or pouring manure, and the fertilizer should be sprinkled on the dry topsoil. Some raise the role of seedlings."