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EFFECT OF POTASH APPLICATION ON RICE YIELD IN MID-ALTITUDE AREAS IN GUIZHOU PROVINCE

LU Yin-gang

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Abstract

A field experiment was conducted in Ziyun County in southern Guizhou, with an altitude of 1 050 m, which area is characterized by plentiful solar radiation and large diurnal temperature variation, and the technologies of balanced fertilization were practiced. Rice yield thus obtained was 1.6 times that of the local average. Yield improvement range in then treatment of potash in combination with N was 22.1%～27.7%, as compared with the traditional agronomic practice of the local farmers. The output : input ratio of potash application was 1.7～3.7. Yield increase was mainly attributed to the increase in 1 000-seed-weight (6.6%). Potash also improved the quality of rice grain with an increase of 12.14% in crude protein. The optimum ratio of N to K2O was 100 ∶ 85～113 in this experiment.

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What this paper is about

A field experiment was conducted in Ziyun County in southern Guizhou, with an altitude of 1 050 m, which area is characterized by plentiful solar radiation and large diurnal temperature variation, and the technologies of balanced fertilization were practiced. Rice yield thus obtained was 1.6 times that of the local average. Yield improvement range in then treatment of potash in combination with N was 22.1%～27.7%, as compared with the traditional agronomic practice of the local farmers. The output : input ratio of potash application was 1.7～3.7. Yield increase was mainly attributed to the increase in 1 000-seed-weight (6.6%). Potash also improved the quality of rice grain with an increase of 12.14% in crude protein. The optimum ratio of N to K2O was 100 ∶ 85～113 in this experiment.

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Available abstract

A field experiment was conducted in Ziyun County in southern Guizhou, with an altitude of 1 050 m, which area is characterized by plentiful solar radiation and large diurnal temperature variation, and the technologies of balanced fertilization were practiced. Rice yield thus obtained was 1.6 times that of the local average. Yield improvement range in then treatment of potash in combination with N was 22.1%～27.7%, as compared with the traditional agronomic practice of the local farmers. The output : input ratio of potash application was 1.7～3.7. Yield increase was mainly attributed to the increase in 1 000-seed-weight (6.6%). Potash also improved the quality of rice grain with an increase of 12.14% in crude protein. The optimum ratio of N to K2O was 100 ∶ 85～113 in this experiment.

Key concepts: Potash, Altitude (triangle), Yield (engineering), Environmental science, Effects of high altitude on humans, Human fertilization, Low altitude, Fertilizer

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EFFECT OF POTASH APPLICATION ON RICE YIELD IN MID-ALTITUDE AREAS IN GUIZHOU PROVINCE — Research Paper | ScholarLens