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果树进行无水液氨直接施肥,是一项开发不久的新技术。北京双桥农场于1979年开始,对葡萄、苹果等果树作了多年施氨肥效的研究。结果表明,果树施了液氨之后,果实不易被风吹落,果子品质好,产量高,肥效显著。以金冠苹果为例,每株施3.3公斤液氨的比对照(不施肥的)增产31.7％,比每株施9.5公斤碳铵的增产12.6％。它的落果率较施碳铵减少一半。
Fruit trees for direct liquid ammonia fertilizer, is a new technology developed soon. Shuangqiao farm in Beijing began in 1979, on grapes, apples and other fruit trees made years of ammonia fertilizer efficiency research. The results showed that after the fruit trees were treated with liquid ammonia, the fruit was not easy to be blown by the wind, the fruit quality was good, the yield was high, and the fertilizer effect was remarkable. Taking Golden Delicious apple as an example, the yield of liquid ammonia of 3.3 kg per plant was increased by 31.7% compared with the control (without fertilization) and increased by 12.6% over the yield of 9.5 kg of ammonium bicarbonate per plant. Its dropout rate is halved compared with ammonium bicarbonate.