Shapingba District, Chongqing: Agricultural technicians support rice field management
In the recent period, there has been a phenomenon of cold spring. With the temperature drop, will the seedlings in the field be frozen? In the past week, the technicians of the agricultural technology station in Shapingba District of Chongqing have gone deep into the towns of Huilongba, Fenghuang and Qingmuguan to inspect the field growth of rice and maize seedlings. Judging from the inspection situation, although there was continuous rainy weather during rice breeding this year, local farmers generally mastered the breeding technology, the seedlings were properly insulated, and the seedling growth was basically normal. Eva Colorful Building Blocks is consist of four different but classical colors. Made from Eco-friendly, closed cell, non-smell and non-toxic Eva Foam material, passes ASTM and EN71 certificates, the safety of this product is the last thing needs to be worried. Eva Colorful Building Blocks,Colorful Building Blocks,Colorful Eva Foam Building Block,Eva Colorful Foam Building Block,Colorful Foam Building Block,Colorful Educational Building Block Huizhou Melors Plastic Products Factory , http://www.melorsfoam.com
However, due to the long duration of the low temperature and the large temperature drop in the previous period, the growth of the seedlings was adversely affected to some extent. The growth of the seedlings was generally weak, and some of the seedlings in the field appeared “yellowâ€. The rice seedlings planted in early March are currently in a leaf-and-heart period, and later in the heart leaf stage, the corn seedlings are in a leaf, one heart and two leaves and one heart. The management of seedlings is the basis for obtaining a good harvest. In response to the current field management of rice seedlings, the technical staff draws attention to the following questions:
The first is to strengthen the management of the cover film of Putian to prevent rotten dead seedlings. The seedlings are in the “weaning period†before the 3-leaf stage. They should be covered with a film to keep warm and cold, take a sunny ditch water, and drain the water in rainy days. In this period, if the cold wave is low, the deep water should be used to protect the seedlings. After the low temperature, the water should be drained gradually, and the shallow water layer should be retained.
Second, in the case of sunny days, it is necessary to ventilate the seedlings in time according to the temperature changes On the sunny day when the maximum temperature reaches 20 °C, the film should be uncovered at both ends, and the temperature inside the film should be controlled below 30 °C. If the temperature continues to rise, the middle of the film should be lifted even halfway to prevent the temperature inside the film from exceeding 40 °C. Water must be irrigated before ventilation to prevent the leaves from losing water and wilting.
Third, in order to improve the quality of the seedlings, the grass ash can be properly applied to the acreage to increase the ground temperature and improve the cold resistance of the seedlings. It is also possible to use 0.5% urea + 0.2% potassium dihydrogen phosphate solution for top dressing of the seedling roots, and to increase the application of ferrous sulfate, zinc sulfate and other micro-fertilizers to increase the chlorophyll content of the seedlings and enhance photosynthesis.
For the field management of corn seedlings, it is also necessary to deal with the changes in the weather, not only to keep warm and cold, but also to pay attention to ventilation and refining, and at the same time to properly match the quick-acting fertilizer with the seedlings, to lay a good foundation for the harvest of the spring food.
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