Recent corn production technical advice (Heilongjiang)

Since late April, the province has experienced persistent low temperature and rainy weather, affecting planting and fertility of corn. According to the provincial meteorological department, from April to May 5, the average precipitation in the whole province was 30-70mm, 2-60% more than in the same period of the previous calendar year, and 2-3 times more in individual areas; the temperature was lower by 1-2 degrees. The area is 2-3 degrees lower, with anomalous periods of precipitation, increased soil water saturation area, and water accumulation in some low-lying plots, which hinders the spring season. At present, the first accumulated temperature zone in the province and the second maximum accumulated temperature zone corn planting is nearing completion. In other regions, the sowing period for maize is delayed by 7-10 days. It is estimated that from now until mid-May, the province will still have low-temperature and rainy weather, and the sowing time for individual regions may increase. In order to grab crops, resist disasters, promote spring plowing, win full seedlings, and ensure the safety and maturity of corn, we recently proposed technical advice on corn production. First, speed up the progress of corn planting when robbing farmers. "Last Summer" has already passed, and "Little Full" is approaching. The best time for corn planting is limited and it will not wait until then. According to the meteorological department's forecast, the weather in the province was fine on May 9-12 and the temperature rose. Every locality should seize the favorable opportunity to concentrate on the "three forces" and adopt the combination of "machine, horse, and cow" to fight day and night and rush to attack. . In order to accelerate sowing, all localities should proceed from reality, take measures that suit local conditions, take all effective measures, and moderate soil moisture levels, should play a role in large-scale agricultural machinery, and stop trying to expand machine sowing area; the soil moisture is too high and machinery cannot enter the ground. Adopting animal power, planting seeds, and artificial seeding, efforts are made to shorten the sowing date and speed up the sowing progress. Second, adhere to standards, and strive to improve the quality of sowing. High-quality seeding is an important condition for achieving high yields. Unfavorable weather and soil conditions have an impact on high-quality seeding. In order to achieve a high standard of planting quality, all localities must strictly control the quality of planting, and in particular, prevent the occurrence of extensive cropping and extensive planting. One must adjust measures to local conditions, and cannot blindly plant plots that do not reach the conditions for planting. Second, they must reclaim the crops before planting in order to plant the crops after planting. Third, they must be based on seed quality, germination test data, and planting density. Such as determining the amount of sowing, especially mechanical sowing, but also take into account the impact of adverse soil conditions on the sowing, to determine the amount of seeding through the test; four should be based on the actual situation, reasonably determine the appropriate depth of sowing, soil moisture large plots Shallow seeding should be properly supervised, and repression should be carried out every other day. The plots with small soil moisture content can be appropriately increased in seeding depth (relative to shallow shrubs), followed by repression, so that fine seeding, seeding, and seeding can be achieved. Uniform, consistent depth, tight soil cover, accelerated seed germination seedlings; five need to sit on water plots, we must adhere to filter water species, to ensure that once seeded take full seedlings. Third, take measures to effectively resolve the impact of delay in the sowing period. All localities should take measures against current unfavorable soil and meteorological conditions, take measures to suit local conditions, and actively take measures to effectively resolve the impact of the delay in the sowing period. First, it is necessary to adopt the method of priming, accelerating the planting of buds, and the conditions of the water source are good and the labor is sufficient. Germination, germination, seedling transplanting is one of the most effective technical measures to seize accumulated temperature and solve the sowing delay. Sprouting and accelerating buds can generally grab the accumulative temperature of 50°C to 80°C, and more seedlings are transplanted and transplanted. For mechanical sowing, we must take sowing of small buds, and pay attention to the recent weather forecast, seize the fine weather on the 9th and 12th, and grasp the germination time. If you plant and plant your seed, you should take the planting of buds. The second is to drain the water. In the case of heavy and low-lying lands with easy-to-use and clear water, it is necessary to take measures to drain water, and the sowing date is obviously delayed. The situation should be reviewed. According to the actual situation, farmers should be mobilized to grow early-maturing varieties or grow early-maturing soybeans and adopt early-maturing varieties. , Late sowing, dense planting, this is a stable production of technical measures in the late sowing conditions, sowing areas should be vigorously promoted. Third, we must promote chemical weeding and weed control techniques to prevent grassland shortages and prevent and control plant diseases and pests. Germination mechanical sowing, can be germination, the seeds placed in a cool dry place after 6h, and then use 2% rick show according to the seed amount of 0.3% seed dressing to ensure seedlings full, Miao Qi, Miao Zhuang. Fourth, we must fully grasp the shovel before a plow (pull ditch) or deep loose soil, strengthen the deep loose and shovel management, so that more shovel, more hoe, to achieve cold release and increase temperature to promote crop growth and development. Fourth, carefully check the fields, early seedlings, early set seedlings to prevent Miaohuo seedlings. This year's climatic conditions are abnormal and the soil temperature is low. The pre-planted plots are prone to powdering, and corn smut is also prone to occur. Therefore, before the emergence of crops, field inspections should be carried out to investigate in detail the situation of powdered seed and seedlings in the field. Nursery can be carried out earlier to prepare for planting or transplanted by seedlings. 3-4 pieces of corn in the morning when the seedlings, to weak seedlings, disease between the seedlings, seedlings 5-6 leaves when the Dingmiao, in addition to the net seedlings in addition to net birch grass, the roots should eradicate eradication, leaving no "shaved seedlings."

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