Fertilization techniques and facilities for planting autumn cucumber
1. Increase the application of rotten organic fertilizer, supplement phosphate fertilizer, apply 60 kilograms of mature organic fertilizer, 0.5 kilogram of calcium magnesium phosphate fertilizer and 0.5 kilogram of potassium sulfate for every 10 square meters of seedling bed, and spray 0.05% 0.1% urea solution twice according to the seedling condition. two。 Base fertilizer applied high-quality organic fertilizer 30.4 square meters / mu. 3. The yield level is 14000-16000kg / mu: nitrogen fertilizer (N) 45kg / mu, phosphate fertilizer (P2O5) 20kg / mu, potash fertilizer (K2O) 40kg / mu. 4. The yield level is 11000-14000kg / mu: nitrogen fertilizer (N) 37kg / mu, phosphate fertilizer (P2O5) 170kg / mu, potash fertilizer (K2O) 35kg / mu. 5. The yield level is 7000kg / mu: nitrogen fertilizer (N) 30kg / mu, phosphate fertilizer (P2O5) 1216kg / mu, potash fertilizer (K2O) 30kg / mu. 6. The yield level is 40007000kg / mu: nitrogen fertilizer (N) 20kg / mu, phosphate fertilizer (P2O5) 8kg / mu, potassium fertilizer (K2O) 25kg / mu. If drip irrigation is used, chemical fertilizer can be reduced by 20%; if flooded, the amount of fertilizer will need to be increased by 10% to 20% each time. All organic fertilizer and phosphate fertilizer of cucumber were applied as base fertilizer, and the early flowering stage was mainly controlled. According to the nutrient requirements of the growth period, all nitrogen and potassium fertilizers were regularly topdressing for 6-11 times, each time no more than 5 kg / mu, 6-7 times for autumn-winter and winter-spring crops, and 10-11 times for long-winter stubble.
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How to keep the seed of conventional celery
In recent years, some excellent conventional varieties of celery have been cultivated in many places, which also account for a large proportion in planting. In view of the fact that celery is a cross-pollinated crop, conventional improved varieties should especially do a good job in seed retention and degradation prevention, establish a good seed field or seed base, and select good seed plants. Strictly quarantined around the remaining fields at least 4.
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How to prevent and control the "yellow ring leaf" of cucumber in greenhouse
The "yellow ring leaf" is common in cucumber overwintering cultivation, which seriously affects the yield and economic benefit. This phenomenon is not caused by infectious diseases, but generally belongs to physiological diseases. First, the symptoms showed that there were more occurrence in the middle and lower leaves of cucumber. The edge of the leaf is yellow at the beginning, and then develops into the leaf along the edge of the leaf.
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