MySheen

Potassium should be replenished in time for low temperature wheat in spring

Published: 2024-11-24 Author: mysheen
Last Updated: 2024/11/24, In order to cooperate with the spring action of soil testing and formula fertilization, recently, experts from the Chinese Academy of Agricultural Sciences went to Gaocheng, Hebei Province to track the growth of wheat. The survey found that due to the low ground temperature this spring, the turning green of winter wheat in this region was 10 days later than in previous years, and the first Internode of wheat was longer than in previous years, while the second Internode had not grown well.

In order to cooperate with the spring action of soil testing and formula fertilization, recently, experts from the Chinese Academy of Agricultural Sciences went to Gaocheng, Hebei Province to track the growth of wheat. The investigation found that due to the low ground temperature in spring this year, the turning green of winter wheat in this region was 10 days later than in previous years, the first Internode of wheat was longer than that of previous years, while the second Internode was not growing well, and the stem was soft. Winter wheat has 12-16 nodes, and the second Internode is the key. Technicians are worried that if this goes on, once the dry and hot weather occurs in June, it may cause a large area of wheat lodging, seriously affecting the yield and quality of wheat. According to further investigation and understanding by experts, this phenomenon is relatively common in Gaocheng, Hebei Province, and it is suggested that the broad masses of farmers in winter wheat areas should attach great importance to it. If emergency measures are taken within a week, the problem can still be alleviated. Experts put forward specific measures: spraying 30 kg potassium nitrate solution with a concentration of 1% on wheat leaves, and spraying again 3-5 days after the first spray, the effect is better. The direct cost of spraying potassium nitrate is about 1 yuan per mu, the investment is less and the effect is remarkable. At present, agricultural administrative departments and agro-technical extension units in Gaocheng City, Hebei Province have taken action to inform farmers to spray potassium fertilizer according to the advice of soil and fertilizer experts. In view of the problems in the growth of low-temperature wheat this spring, experts put forward the following suggestions for farmers to apply fertilizer for planting winter wheat in the future: half of the potassium fertilizer applied at one time in the past can be used for wheat from the late stage of emergence to the early stage of jointing, mainly spraying potassium nitrate once, which can not only replace paclobutrazol (a hormone), but also ensure the need for nitrogen and potassium for wheat during this period.

 
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