Balanced fertilization method under condition of wheat/corn one-year-two-harvest cultivation total straw returning

Abstract

The invention relates to a balanced fertilization method under the condition of wheat / corn one-year-two-harvest cultivation total straw returning. In the winter wheat season, corn ears are harvested when corn is ripe, straw and root remains are smashed, or the straw and the root remains are smashed while the corn ears are harvested by a machine, the corn straw and the root remains are smashed once again before soil preparation, base fertilizer is applied, soil is subjected to rotary tillage or is subjected to ploughing to bury the corn straw, then rotary tillage is conducted, wheat is sown, and topdressing is carried out in the jointing stage; in the summer corn season, wheat is harvested by the machine when being ripe, meanwhile, wheat straw is smashed, the wheat straw is made to cover the field, then corn is subjected to no-till machine seeding or manual dibble seeding, wheat stubble cleaning is carried out at the corn seedling stage, topdressing is performed at the belltop stage and the anthesis maturity period, or the corn is subjected to no-till machine seeding, meanwhile, seed fertilizer is applied, and topdressing is performed at the belltop stage and the anthesis maturity period. According to the balanced fertilization method, wheat and corn are used as one fertilization unit, the fertilizing amount and the fertilizing method are balanced, the full stand and healthy seedling and the high and stable yield of wheat and corn are guaranteed, soil organic matter is increased, the soil fertility is raised, sustainable highyield is achieved, and the fertilizer utilization efficiency is improved.

Description

technical field [0001] The invention relates to a fertilization method in the crop planting and production process, in particular to a method of returning wheat / corn twice a year to the field in full amount of crop stalks, the yield of winter wheat is 500-600kg per mu, and the yield of summer corn is 600-700kg per mu, which is medium or above Balanced fertilization methods at fertility levels. Background technique [0002] my country has a huge amount of crop straw resources, and the annual straw production is about 760 million tons. The nitrogen (N) and phosphorus (P 2 o 5 ), potassium (K 2 O) The quantity of nutrient resources reached 7.76 million tons, 2.49 million tons, and 13.42 million tons respectively, and the yields of corn, rice and wheat straw were the highest. Crop straw is an important organic fertilizer source, accounting for about 16.6% of organic fertilizer resources, and is rich in C, N, P, K and medium and micronutrient elements necessary for crops. Lon...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem of nitrogen content between wheat seedlings and corn stalks caused by unreasonable fertilization amount, fertilization method and unbalanced fertilization under the conditions of wheat / corn double cropping system and two crop stalks returned to the field in full amount. There are many problems such as yellow seedlings, corn production reduction, low fertilizer utilization rate, serious environmental pollution, etc., thus providing a method of returning full amount of crop straw to the field for balanced fertilization in medium and high-yield fields of wheat / corn twice a year