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The Research of the Effect of Micro Drip-irrigation Special-purpose Fertilizer to Cotton of Drip-irrigation under the Membrane

Author: GuanXinYuan
Tutor: GaoZhenJiang；LvXin
School: China Agricultural University
Course: Farming
Keywords: Drip-irrigation under the membrane Fertilizer application with water Fertilizer used special-purpose in the drip-irrigation
CLC: S562
Type: Master's thesis
Year: 2005
Downloads: 147
Quote: 0
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Abstract


This experiment is the comparison the drip-irrigation special-purpose fertilizer exploited Xinjiang Nongken academy of science to the present commonly fertilizer. We can see that the drip-irrigation special-purpose fertilizer (1) increases the cotton fruit-bearing branch number, increasing 0.45 fruit-bearing branch/plant. After Pinching off the actual fruit-bearing branch number outdo 0.63/ plant. It is well to guarantee and long the flower bud to make sure the flower bud quantity. To increase leaf area coefficient and single plant number of leaves. It strengthen to photosynthesis and is advantageous to the finally output and the biology output’s formatted. It is remarkable to increase the cotton plant’s dry weight, the upside parts increase 8.74 grams/ plant and the downside parts increases 0.68 gram/ plant. The ratio of the dry weight upside to downside reduces from 26.27 to 23.14. It is more advantageous to the cotton adult plant healthy growth. Cotton’s single bell weight enhances about 0.355 gram. The seed cotton’s output enhances 236.4kg/ hm~2. It is obvious of economical value, compared to the convention fertilizer the synergizes is 999.49 yuan/hm~2. (2) According to the analysis of N and P of processes 10-40cm, each center P’s content is higher than the convention fertilizer, which shows the special-purpose fertilizer P’s crosswise and vertical motion distance is bigger than the convention fertilizer. The drip-irrigation special-purpose fertilizer’s N and P using ration are 52.85%, 24.95%, compared to the drip-irrigation convention fertilizer enhances 6.24 and 2.86 percentage points. (3) Under the cotton’s drip irrigation condition, drip-irrigation fertilizer 600kg/hm~2, between 0-40cm the soil pH reduce 0.3 compared to the conventional fertilizer and 0.5 to no fertilizer. (4)The N using ration of the drip-irrigation special-purpose fertilizer is 54.42% through interpolation law research and enhance 18 percentage points compared to the convention fertilizer. All that indicates the drip-irrigation special-purpose fertilizer has well application prospect in fertilizer application with water.

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CLC: > Agricultural Sciences > Crop > Economic crops > Fiber crops > Cotton
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