In September, the growth of Chinese cabbage entered the later period. This is also a period when Chinese cabbage grows rapidly. If water and fertilizer are supplied properly during this period, pay attention to the control of pests and diseases, and the yield can be greatly increased.
First, the rosette period: the outer leaves grow rapidly. 85% of the roots in the roots are distributed on the surface of the soil. Usually, a large amount of manure water should be poured in early September, 2000 kg per mu.
Second, the heart period: the ball began to grow rapidly and full, this time again poured large manure, 2000 kg per mu or urea 10 kg, after 10 days, but also watered and applied potassium sulfate 10 kg.
Third, the ball period: During this period, the weather gradually turned cool, cabbage gradually from the rapid growth period into the slow growth period and nutrient accumulation stage. It is not necessary to use large amounts of water and fertilizers. If water is needed, water is mainly used to stop watering for 7 days before harvest to improve its quality.
IV. Pest control: 1 Insect pests: When it is found that the cabbage in the field has a root damaging effect, it is necessary to immediately irrigate the roots with 90% crystal trichlorfon 600-800 times, or use 50% octanoic acid 160 times per acre. 150 kg spray. 2 Diseases: The soft rot disease was the main disease during this period. The diseased plant was found to be removed in a timely manner, and lime was applied in the open hole. Each hole was applied with about 250 grams. Pharmaceutics control Feng Ling 150-250 grams per mu vegetable, add water, 50 kg, digging along the Caiyuan irrigation, or use Fengling 100 to 150 grams of water and 100 kg of water spray to the foliage and the base, but also in the early stages of the use of agricultural Streptomycin is added to 2-3 sticks (1 million units) per 15 kilograms of water, or neophytin 4000 times, or 70% of the dexamethasone WP 800 times, with 50 kilograms per acre. 7-10 days to prevent and control once, even against 2-3 times. Pay attention to spray the liquid on the petiole of the plant and the base of the stem.
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