Re-application of base fertilizer, timely planting: summer squash cultivation of zucchini, in order to prevent winter low-temperature top dressing does not occur in time, the base fertilizer should be applied. In the absence of land for the former crop, water is irrigated before the preparation. When the soil is suitable for cultivation, 75,000 to 105,000 kilograms of high-quality decomposed organic fertilizer per hectare , 300 to 4500 kilograms of nitrogen, phosphorus and potassium compound fertilizer , 1500 kilograms of cake fertilizer , and 30 centimeters deep . After ploughing, the greenhouse is heated for 5 to 7 days, or the sulphur and chlorothalonil fumes are fumigated and sterilized. The shed is thoroughly disinfected and ventilated for use.
　　
Skillful application of topdressing, strong growth and fruit promotion: cultivation of summer squash in the greenhouse in winter and spring, slow seedling stage after planting, is also the new root growth period, root growth is fast, stem and leaf growth is not obvious. Therefore, the temperature should be kept high, the roots should be fastened, and the roots should be prevented. Slowly watering the seedlings in time, combined with watering, can apply the decomposed manure and urine ( 10 times) 6000 to 7500 kg per hectare with water , and then control the water seedlings. Entering the melon period, it is also the lowest temperature in winter, which is not conducive to the growth of melons. In this period, vegetative growth and reproductive growth are carried out at the same time, and the relationship between the two is well coordinated. Balanced fertilization is the key. When combined with water gengwa began to expand, a second fertilizer per hectare vegetable special fertilizer NPK 150 to 450 kg or maturity cake solution (10-fold) Â About 5,000 kilograms. With the water rushing into the dark ditch under the mulch, the film is tightly sealed and ventilated after irrigation.
　　
When the zucchini enters the fruiting period, the management of fertilizer and water is very important. It is necessary to observe the growth of plants and moderately control the balanced growth of vegetative growth and reproductive growth of plants according to weather changes. The harvest frequency of winter and spring squash is high, and each plant can harvest 7 to 9 fruits. Generally, two melons are harvested, that is, about 1 time every 15 days . Each hectare is applied with 500 kg of compound fertilizer per hectare or cake fat fertilizer or fully decomposed fecal urine ( 10 times) 7500 ~ 15000 kg, mainly based on organic fertilizer, with a small amount of compound fertilizer. At the same time, the leaves were alternately sprayed with 0.2 % potassium dihydrogen phosphate plus 100 times syrup or humic acid compound fertilizer to make up for the lack of nutrients absorbed by the roots. After each watering and fertilizing, pay attention to the release of moisture and disease prevention, and timely harvest, in order to prevent the melon from consuming large nutrients and causing falling and turning melons. In the late stage of melon, the plants are senescent and the amount of fertilizer is appropriately reduced.
　　
Starting from the first melon, in order to make up for the lack of light, the temperature is low, the photosynthesis is weak, and the plant growth is poor. In addition to the appropriate amount of foliar potassium dihydrogen phosphate or photosynthetic micro-fertilizer, special attention should be paid to carbon dioxide gas fertilizer. Apply. Optional generally sunny morning after sunrise the sheet to expose about half an hour, the temperature was raised to 15 deg.] C began to 1300 administered at a concentration of 1000 mg / l of carbon dioxide gas of fat, 3 to 5 days 1, every two hours, can improve fruit set , extend the results period.3D Water Steam Fireplace,3D Water Fireplace,Small Water Steam Fireplace,Water Steam Fireplace Without Heat
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