Specification for fertilization techniques for winter melon cultivation in open field


   1 cultivating strong seedlings: open field cultivation is divided into two types: scaffolding and climbing. Optional Optional growing strong, big leaf stem diameter, heat, floods, drought, disease-resistant varieties, early maturing varieties such as a string of bells, rush, five leaves, Jilin small melon, white and so on dissolution, cooked varieties Green skin, Neijiang, big car head melon, etc., late-maturing varieties Daqingpi, Hunan powder skin, Yangzizhou, white skin, etc. can be broadcast live or seedling transplanting. When the selection of the seeds after the first 30 minutes Soaking 0.1-0.2% potassium permanganate solution, rinse with hot water and then soaked 50-60 deg.] C, it was stirred continuously temperature dropped to about 30 ℃, continued Soak for 12-14 hours, remove the germination at 30-35 °C .

The seeding and seedling method can be divided into seedling seeding method and seedling seeding method. The seedling seeding method is to raise seedlings on the seedbed, and the seedling spacing is 2-4 cm. When the first true leaf appears, the seedlings can be divided, and the seedlings can be colonized by 4 leaves and 1 heart. No seedling sowing method, that is, no seedlings after sowing, growing into a strong seedling suitable for planting in situ , generally used for late-maturing winter melon seedlings with late sowing date, high temperature, fast growth and short seedling age.

â‘¡ heavy Fertilizers, timely planting: melon high yield, large amount of fertilizer required to obtain a high yield excellent quality, must Shizujifei organic fertilizer rich in nutrients nitrogen, phosphorus and potassium-based. When planting or doing hoeing during land preparation, it is 75,000-105000 kg per hectare . If the source of organic fertilizer is insufficient, when planting , the application of NPK fertilizer should be 750-1050 kg per hectare . After the end of the frost in the northern region, it can be planted. 82500 General precocious melon, ripe melon in 21000 -2.55 million, maturing melon 15,000 -1.8 trees.

3 skillful application of topdressing, strong and melon melon: After planting for 1 week, when the plant begins to slow down the seedling, the seedling water can be poured. If the basal lack of light can Huanmiao Shi 1 fertilizer. When the melon is stable, it is necessary to promptly apply for “promoting melon fertilizer”. This topdressing is the key to the high yield and quality of winter melon. It can be combined with “melting melon water”, and the manure dilute (10 times ) or the cake fertilizer is about 15,000 kg / ha per hectare. After dressing "reminder melon fat" should be based on Guayang growth and soil drought, every 15 days dressing 1, preferably 1 fertilizer once carried water and white. During the fruit expansion period, the melon plant needs the most fertilizer and water, and it is also the key period to determine the yield. This period should be combined with water, increasing the amount of fertilizer, about topdressing per hectare per dilute waste composting manure or liquid fertilizer diluted cake 22500 kg / ha, may be about topdressing NPK 750 kg / ha. The fruit ripening period generally requires less fertilizer, and the management focuses on sputum drainage, disease prevention, and pest control . In order to prevent premature aging, a proper amount of humic acid fertilizer can be sprayed to prolong the result period. Fertilization is no longer applied 10-15 days before harvest . Generally, early-maturing varieties and some mid-maturing varieties are first harvested and tendered, and finally harvested old mature melons can be stored in the warehouse to extend the supply period. Most of the mid-late maturity varieties are harvested with old ripe melons, that is, the physiological maturity is reached as a standard to improve their storage and transportation.

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