At present, as the temperature continues to decrease, greenhouse vegetable cultivation has entered a period of great prosperity. At this time, fertilizer management of greenhouse vegetables during the growth process is crucial. In order to ensure the healthy growth of greenhouse vegetables, scientific use of fertilizer is essential, so on this issue, a reporter recently interviewed Professor Qiu Huizhen of the College of Resources and Environment of Gansu Agricultural University.

Organic manure must be fully cooked. Uncomminuted livestock manure contains germs and parasites. It should not be used directly. Generally, it should be composted to kill various germs, eggs and other seeds during fermentation and decoction, and it can also be used in fertilizers. Organic matter gradually decomposes into various nutrients that plants can absorb. The use of organic fertilizers should be as diversified as possible, avoiding the use of single organic fertilizer for many years and the application of some biological fertilizers.

It is advisable to control the amount of organic fertilizer to apply 5 to 7 tons of chicken manure or 6 to 8 tons of manure, such as pigs and cattle, per acre per year. It is advisable to increase the number of new greenhouses, and to reduce the amount of greenhouses for planting more than five years. For sandy soils, saline-alkali soils, white pulp soils, and chernozem soils with low contents of organic matter, there should be more application, while black soils and meadow soils with higher organic matter content are less suitable.

Fertilizers and farmyard fertilizers should be mixed fertilizers characterized by high nutrient content, fertilizer efficiency and short duration, a single nutrient. Farmyard fertilizer is a complete fertilizer, low nutrient content, slow fertilizer effect and long duration, so the two can be used to make up for weaknesses.

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