How to correctly grasp the harvest time of film-mulched peanut

The cultivation of peanut with plastic film mulching is an important measure to promote high quality and high yield of peanut, but how to achieve high yield and harvest, it is particularly important to correctly grasp the harvest time of plastic film mulched peanut. Practice has proved that there are five main reasons for correctly grasping the harvest time of film-mulched peanuts.

First, look at the harvest time of the cultivated varieties

There are many varieties of peanut covered with plastic film, but Haicheng area mostly uses "Haihua No. 1", Luhua system, Baisha 131 and so on. The growth period of the above variety Baisha "131" is shorter, and the general year is! 35Mel 140 days, the growth period of sea flower varieties is longer, the general year. In 140-150 days, the variety of Luhua is in the middle, so the harvest date must be determined according to the variety.

Second, set the harvest time according to the sowing time

Taking sea flower varieties in Haicheng area as an example, the sowing date can generally be sown from April 15 to May 10, and those sown before "5.1" can be harvested around "10.1". Those sown after "5.1" can be harvested from October 5 to October 10.

Third, determine the harvest time according to the frost period

The morning and evening of the first frost period varies greatly due to climate change, usually from October 5 to October 8, but in some years the first frost appears in late September, so it is necessary to harvest peanuts 3-5 days before the arrival of severe frost according to the great difference in weather.

Fourth, determine the harvest time according to the growth of the event.

Film-mulched peanut nearly matured and began to lose leaves, and the best harvest time was when 705 fallen leaves appeared in the field, that is, there were only 3-4 leaves in each analysis. If the harvest is too late to cause a large number of fruit drop, that is, a waste of labor will also bring losses to the harvest.

Fifth, depending on the soil temperature to determine the harvest time

From a variety of anti-disaster practices in Haicheng, it has been proved that in any year with heavy autumn rain and high soil water content, plastic film mulching peanuts are difficult to achieve the goal of high yield and harvest. Therefore, when peanuts enter the adult, they should carefully observe the weather changes and soil content. If the weather is rainy and the soil temperature is high during this period, live seedlings should be harvested early. The experience of farmers is medium well, 90% of the harvest, 10% of maturity, 30% of the loss. Therefore, the harvest date is determined by looking at the sky and the earth at the end of September every year.