How to apply Base Fertilizer to grow Chinese Cabbage
The application of base fertilizer should be considered comprehensively according to soil quality, soil fertility, variety and growth period. Chinese cabbage is a vegetable with high fertilizer demand, with long growth period and large growth, especially late-maturing varieties, with large plants and high yield, which requires a large amount of organic fertilizer to meet the fertilizer demand of Chinese cabbage in the middle and later stage of heading, so it is generally necessary to apply high-quality bottom fertilizer 4000kg per mu. The base fertilizer mainly comes from the organic fertilizer of farmers, including straw compost of various crops, manure of livestock and poultry, all kinds of cake fertilizer and human manure and so on. Universal and centralized application methods can be adopted according to the difference of fertilizer quantity and quality when applying base fertilizer. It is ideal that the total amount of base fertilizer should be applied generally at 2pm 3 and concentrated at 1pm 3.
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Management of fruiting period of early ripening eggplant in spring
The eggplant cultivated in the plastic film small arch shed in spring will blossom to fruit harvest. Under suitable conditions, it takes about 25 days to harvest, and the first harvest period of eggplant is in the early and middle of May. During the fruit growth period, the weather has turned warm, the film can be all opened during the day, so that the plant can fully see the light, but it should be covered in the evening. If the temperature at night.
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How to prevent early Chinese cabbage from being unprotected?
1. Biological control (1) pay attention to the protection of natural enemy parasitoids, apply borer-killing bacteria (containing 10 billion spores per gram of bacterial powder) 500 × 700 times solution or cyanobacteria 6, B.T. Emulsion, etc. Apply granulosis virus preparation or collect older larvae killed by the virus from cabbage fields (infected larvae lose appetite and blacken body color.
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