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当西瓜长到拳头大时,离瓜根基部3寸远扎大母指粗12厘米深孔,每孔注入3～4克芝麻油或棉籽油,用土封严,3～5天后浇一次
When the watermelon fist grows large, from the base of the melon 3 inches away from the big finger thick crude 12 cm deep hole, each hole injection of 3 to 4 grams of sesame oil or cottonseed oil, sealed with soil, poured 3 to 5 days