Method for reducing nitrogen and increasing efficiency in potato planting

Abstract

The invention discloses a method for reducing nitrogen and increasing efficiency in potato planting. The steps are as follows: step 1, a pure nitrogen addition amount is one of 60 kg / ha, 90 kg / ha, 120kg / ha, 150 kg / ha and 180 kg / ha; step 2, nitrogen is applied, and a nitrogen application manner is one of the following manners: applying full base fertilizers; applying 70% base fertilizers and 30% seedling stage top application, performing top application for one time; and applying 50% base fertilizers, 30% seedling stage top application and 20% tuber formation fertilizers, performing top application for two times; step 3: a nitrogen fertilizer synergist is added, and the synergist is one of a urease inhibitor NBPT, a nitrification inhibitor DCD and a nitrification inhibitor CP; and step 4:the pure nitrogen and the nitrogen synergist are evenly mixed, and then the mixture is mixed with the soil. The advantages of the method are as follows: 1. reducing the amount of nitrogen fertilizer application, increasing the yield of potatoes, increasing the ratio of output to input, achieving remarkable economic benefits, improving the utilization efficiency of nitrogen fertilizers, and conforming to the basic policy of resource saving of the state; and 2. reducing the environment pressure due to an excessive input of agricultural materials through reducing the amount of nitrogen fertilizerapplication, and being conducive to restoring the soil fertility and increasing the sustainable utilization capability of the soil.

Description

technical field [0001] The invention relates to the technical field of crop planting, in particular to a method for reducing nitrogen and increasing efficiency in potato planting. Background technique [0002] Potatoes are the main food crops in my country and one of the most promising high-yield economic crops in the new century, occupying an important position in the production of food, vegetables, feed and processing industries. In 2015, China officially implemented the potato staple food strategy, which played a positive role in promoting the development of the potato industry and solving China's food security. Nitrogen is one of the essential elements for potato growth and is a key factor determining potato yield and quality. Appropriate application of nitrogen fertilizer can promote luxuriant potato branches and leaves, dark green leaves, and is conducive to photosynthesis and nutrient accumulation, which is conducive to increasing tuber yield and protein content. hav...

AI Technical Summary

Problems solved by technology

Therefore, an appropriate amount of topdressing nitrogen fertilizer is beneficial to the growth of potatoes in the middle and late stages and the increase of tuber yield. In production, nitrogen fertilizers are tended to be applied to potatoes at one time. Although it can reduce labor costs, potatoes grow slowly in the early stage, absorb less nitrogen, and grow rapidly in the later stage. The absorption of nitrogen is large, which is not synchronized with the decomposition of nitrogen, resulting in serious loss and low nitrogen utilization efficiency

[0004] At present, potato nitrogen fertilizer research mainly focuses on the effect of nitrogen synergists on potato growth, ignoring the effects of fertilization methods and seasons

Some nitrogen synergists can slow down the decomposition of nitrogen fertilizer and release it evenly during the growth period of potatoes, but it is not clear that the specific application amount and application method can reduce nitrogen and increase efficiency, so a nitrogen synergist was found It is very necessary to use the method reasonably to reduce the amount of nitrogen fertilizer and improve the use efficiency of nitrogen fertilizer.

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