The prevention and control of rice planthoppers (BPH, white-backed planthoppers) should make full use of the measures for agricultural production increase and the control of natural factors to create ecological conditions that are not conducive to pests and conducive to the breeding of natural enemies and increase rice production. According to the specific pest situation, it is rational to use high-efficiency, low-toxic, long-lived pesticides for prevention and control.
First, rational close planting to improve the microclimate in the field and improve the disease resistance of rice.
Second, rational fertilization, control of nitrogen fertilizer, application of phosphorus and potassium fertilizer, clever application of top dressing, so that early growth of rice, increase the hardness of the plant body, to avoid the tender tendril of rice planthoppers, reduce harm.
Third, scientific irrigation, so that shallow water planting, inch moisture, seedlings sufficient sun, deep water booting, wet grouting, through reasonable irrigation, promote rice growth robust and enhance resistance.
4. The agro-technical stations should strengthen field investigations, keep abreast of the occurrence of rice planthoppers in the area, and promptly guide the farmers in their prevention and control.
5. During the peak period of adult migration or during the nymph hatching peak to the peak of 2-3 years old nymphs, 500 insects per 100 nestles (mid-middle rice growth)—800 (middle and late rice growth) began to be controlled.
Six, prevention and treatment of drugs and methods of use.
1, Mu with 25% of Lele WP can be 20-25 grams of water 60-75 kg spray.
2, Mu with 25% buprofezin WP 40-60 g water 60-75 kg spray.
3, severe fields: Mu with 25% of WP WP 30-35 g +80% of dichlorvos EC 100 ml (or 40.8% Lothben EC 60 ml) water 60-75 kg spray.
4. Note: Add a proper amount of new high-fat film during spraying, increase the efficiency of the drug, and spray the drug to a sufficient extent. The sprayed part should be sprayed to the base of rice as far as possible, and the field should maintain a shallow layer of 5 to 10 cm when spraying. (China Plant Protection Network: Wei Linfei)
Cucumber
Netherlands cucumber for female is more, mainly for greenhouse cultivation, unlike most outdoor cultivated varieties, they can not through pollination fertilization can finish the development of the fruit, but does not form a fully developed seeds.Early female system has the advantage of fruit maturity, high yield.The characteristics of this type of melon is: melon, one section one melon, section 1, 2 and more than 1 section melon melon.And, if appropriate management level, high yield potential is very big, 667 square meters of single crop yield can be over 10000 kg.1 year can be 2-3 times.
Netherlands Cucumber Seeds,Cucumber Seeds,Little Cucumber Seeds,Prickly Cucumber Seeds
Ningxia Bornstein Import & Export Co., Ltd , https://www.bornstein-agriculture.com