खाद्य संसाधनों में सुधार RRB Group D – Improvements in Food Resources Notes
खाद्य संसाधनों में सुधार RRB Group D – Improvements in Food Resources Notes
🔶 1. खाद्य संसाधन में सुधार क्यों ज़रूरी है?
- भारत की जनसंख्या तेजी से बढ़ रही है।
- सबको भोजन मिले इसके लिए अधिक उत्पादन ज़रूरी है।
- खेती की जमीन सीमित है, इसलिए नई तकनीक से खेती करनी पड़ती है।
- अच्छी किस्म के बीज, खाद, सिंचाई और कीट नियंत्रण से उत्पादन बढ़ता है।
🔶 2. भोजन के मुख्य स्रोत
- फसल उत्पादन (कृषि) – गेहूँ, धान, दालें, सब्ज़ियाँ
- पशुपालन – गाय, भैंस, मुर्गियाँ
- मत्स्य पालन (मछली पालन) – नदियाँ, तालाब, समुद्र
A. फसल उत्पादन (Crop Production)
1️⃣ फसल किस्म सुधार (Crop Variety Improvement)
ऐसे बीज बनाए जाते हैं जो—
- अधिक उपज दें
- कम समय में उगें
- रोगों से बचें
- कम पानी में भी उग जाएँ
➡️ इसे बीज सुधार / प्रजनन (Breeding) कहते हैं।
2️⃣ फसल उत्पादन के स्तर
⭐ (i) पारम्परिक खेती
- कम खर्च
- सरल औज़ार
- उपज कम
⭐ (ii) मध्यम स्तर
- अच्छे बीज
- थोड़ी खाद
- सामान्य सिंचाई
⭐ (iii) आधुनिक खेती
- HYV बीज
- रासायनिक खाद + कीटनाशक
- मशीनें
➡️ उपज सबसे अधिक मिलती है।
3️⃣ पौधों को आवश्यक पोषक तत्व
पौधों को 16 पोषक तत्व चाहिए:
- मुख्य तत्व: नाइट्रोजन (N), फॉस्फोरस (P), पोटैशियम (K)
- सूक्ष्म तत्व: आयरन, मैंगनीज़, जिंक आदि
खाद के प्रकार
- खाद (Manure): प्राकृतिक, भूमि को उपजाऊ बनाती है
- उर्वरक (Fertilizers): रासायनिक, जल्दी असर करते हैं
4️⃣ सिंचाई के तरीके (Irrigation)
परम्परागत तरीके:
- कुआँ
- नहर
- ट्यूबवेल
- तालाब
आधुनिक तरीके:
- ड्रिप सिंचाई
- स्प्रिंकलर सिंचाई
5️⃣ फसल व्यवस्थाएँ (Cropping Patterns)
🔸 मिश्रित फसल (Mixed Cropping)
एक ही खेत में दो फसल उगाना — नुकसान का खतरा कम।
🔸 अंतर्वर्ती फसल (Intercropping)
लाइन-बाय-लाइन अलग-अलग फसलें।
🔸 फसल चक्र (Crop Rotation)
एक फसल के बाद दूसरी फसल — भूमि की उर्वरता बनी रहती है
(उदाहरण: गेहूँ के बाद दाल की फसल)
B. फसल सुरक्षा (Crop Protection)
फसल को नुकसान पहुँचाते हैं:
- खरपतवार (अनचाही घास)
- कीट
- रोग
- चूहे
उपाय:
- खरपतवारनाशी (Weedicides)
- कीटनाशक / फफूँदनाशक
- साफ़ बीज
- उचित भंडारण
C. अनाज का भंडारण (Storage)
- अनाज को अच्छी तरह सुखाकर रखना
- नमी से बचाना
- कीटों से बचाने के लिए धूम्रीकरण (Fumigation)
- बड़े गोदाम, साइलेज, टैंक का उपयोग
D. पशुपालन (Animal Husbandry)
1️⃣ डेयरी (दूध उत्पादन)
- गाय और भैंस का पालन
- अच्छा चारा
- टीकाकरण
- साफ़ रहने की जगह
2️⃣ कुक्कुट पालन (Poultry)
- मुर्गी, ब्रॉयलर
- साफ़ शेड
- संतुलित दाना
3️⃣ मत्स्य पालन (Fisheries)
दो प्रकार:
- समुद्री (Marine): ट्यूना, मैकेरल
- अंतर्देशीय (Inland): तालाब, नदी की मछलियाँ (रोहू, कतला)
➡️ मछली पालन को Aquaculture भी कहते हैं।
E. मधुमक्खी पालन (Apiculture)
- शहद और मोम मिलता है
- फसलों में परागण बढ़ता है
- किसानों की आय बढ़ती है
पूरे अध्याय के 10 आसान बिंदु (Quick Revision)
- बढ़ती जनसंख्या के कारण खाद्य उत्पादन बढ़ाना ज़रूरी है।
- खेती + पशुपालन दोनों से भोजन मिलता है।
- बीज सुधार से अधिक और अच्छी उपज मिलती है।
- खाद और उर्वरक दोनों पौधों के लिए ज़रूरी हैं।
- सिंचाई से पौधों को पर्याप्त पानी मिलता है।
- मिश्रित फसल, अंतर्वर्ती फसल और फसल चक्र से भूमि उपजाऊ रहती है।
- कीट, रोग और खरपतवार फसल को नुकसान पहुँचाते हैं।
- अनाज को सूखा और सुरक्षित रखकर भंडारित किया जाता है।
- पशुपालन से दूध, मांस, अंडा आदि उत्पादन बढ़ता है।
- मत्स्य और मधुमक्खी पालन किसान की आय बढ़ाते हैं।
Chapter 12 – Question & Answers (Easy Hindi)
1. खाद्य संसाधनों में सुधार की आवश्यकता क्यों है?
उत्तर:
क्योंकि भारत की जनसंख्या बढ़ रही है और सबको पर्याप्त भोजन देने के लिए
फसल उत्पादन बढ़ाना ज़रूरी है। खेती की जमीन सीमित है, इसलिए बेहतर बीज,
अच्छी सिंचाई, खाद और आधुनिक तकनीक की जरूरत होती है।
2. खाद (Manure) और उर्वरक (Fertilizer) में अंतर बताइए।
उत्तर:
| खाद (Manure) | उर्वरक (Fertilizer) |
|---|---|
| प्राकृतिक होता है | रासायनिक होता है |
| मिट्टी को उपजाऊ बनाता है | पौधों की तेज़ वृद्धि कराता है |
| पौष्टिकता कम | पौष्टिकता अधिक |
| मिट्टी की संरचना सुधारता है | अधिक प्रयोग से मिट्टी खराब हो सकती है |
3. फसल चक्र (Crop Rotation) क्या है?
उत्तर:
एक फसल के बाद दूसरी फसल उगाने की प्रक्रिया को फसल चक्र कहते हैं।
जैसे— गेहूँ के बाद दाल की फसल लगाना। इससे मिट्टी की उर्वरता बनी रहती है।
4. मिश्रित फसल (Mixed Cropping) क्या है?
उत्तर:
एक ही खेत में एक साथ दो या अधिक फसलें उगाना मिश्रित फसल कहलाता है।
जैसे— बाजरा + उड़द। इससे नुकसान का खतरा कम होता है।
5. पादपों को कौन-कौन से पोषक तत्व चाहिए?
उत्तर:
पौधों को 16 पोषक तत्व चाहिए।
मुख्य तत्व — N, P, K, Ca, Mg, S
सूक्ष्म तत्व — Fe, Mn, Zn, Cu, B आदि।
6. आधुनिक सिंचाई के तरीके कौन से हैं?
उत्तर:
- ड्रिप सिंचाई
- स्प्रिंकलर सिंचाई
7. पशुपालन के प्रकार बताएँ।
उत्तर:
- डेयरी (गाय–भैंस पालन)
- कुक्कुट पालन (मुर्गी पालन)
- मत्स्य पालन (मछली पालन)
- मधुमक्खी पालन (अपिकल्चर)
8. उर्वरक का अत्यधिक उपयोग क्यों हानिकारक है?
उत्तर:
- मिट्टी को कठोर और कम उपजाऊ बना देता है
- पानी में घुलकर प्रदूषण करता है
- फसल की गुणवत्ता घट जाती है
9. मधुमक्खी पालन के क्या लाभ हैं?
उत्तर:
- शहद और मोम प्राप्त होता है
- फसलों में परागण बढ़ता है
- किसान की आय बढ़ती है
MCQs (बहुत आसान – 1 मार्क्स)
1. पौधों को सबसे अधिक किस तत्व की आवश्यकता होती है?
A. जिंक
B. कैल्शियम
C. नाइट्रोजन
D. बोरॉन
✔ उत्तर: C. नाइट्रोजन
2. स्प्रिंकलर किसका उदाहरण है?
A. खरपतवार
B. उर्वरक
C. सिंचाई विधि
D. कीटनाशक
✔ उत्तर: C. सिंचाई विधि
3. मिश्रित फसल में—
A. एक बीज इस्तेमाल होता है
B. एक खेत में दो फसलें
C. केवल दालें उगाई जाती हैं
D. मछली पालन होता है
✔ उत्तर: B. एक खेत में दो फसलें
4. उर्वरक किस प्रकार का होता है?
A. जैविक
B. रासायनिक
C. प्राकृतिक
D. इनमें से कोई नहीं
✔ उत्तर: B. रासायनिक
5. मधुमक्खी पालन को क्या कहते हैं?
A. Horticulture
B. Aquaculture
C. Apiculture
D. Agriculture
✔ उत्तर: C. Apiculture
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